The class number PQ2711 is for French literature, individual authors from 2001 forward whose name starts with K, and cuttering based on the second letter of the name; for Liz Kovarni, we start with:
The second cutter is for the title of the work, which in this case is the number “52”.
The Library of Congress Classification and Shelflisting manual in its section on Cutter numbers (G 063) includes instructions for cuttering for numerals: When Cuttering for Roman or Arabic numerals, use the
Cutters .A12 – .A19. We can use:
I checked the Library of Congress catalog to shelf-list, and found that this author has written another book about women in Mexico. I found myself comparing these two titles for filing order:
Mujeres : entre la imagen y la acció
Mujeres en México : una historia olvidada
Which comes first: that first one, because its title proper comes first? Or the second one, because “en” comes before “entre”?
I checked the Filing Rules in the Library of Congress Classification and Shelflisting Manual, and found a couple of relevant guidelines:
5. Identical filing entries. Consider the title to extend only to the first significant mark of punctuation which will be either a period ( . ) or a slash ( / ).
16. Ampersand and other symbols. The ampersand (&) is the only symbol that has filing value. It follows spaces and precedes the lowest Arabic numeral or alphabetic character. Ignore all other symbols when filing into the shelflist.
Based on those guidelines, I considered the full title (not just the title proper) to be the entry to use for filing, and ignored the :, resulting in this order:
Mujeres en México : una historia olvidad
Mujeres : entre la imagen y la acció
When classifying this title, I assigned the class number P120.V37 (variation in language) followed by a cutter for the main entry (Caravedo). Just following the Cutter table from the Subject Cataloging Manual on Shelflisting, I would have assigned the cutter C37:
C as the first letter of Caravedo
3 for the letter a following an initial consonant
7 for expansion, as the next letter r is between p-s
CI browsed Library of Congress’s catalog in the area of P120.V37 C and spotted a similar title with call number P120.V37 C37 1997, with the second cutter based on the main entry Caro. I shifted that cutter slightly for the title in hand, so that it would file correctly, with Caravedo before Caro:
so we don’t have to start by shelflisting the author under PQ7798.13 (Spanish Literature … Argentina … Individual authors or works 1961-2000, A-Z … starting with C). Note that the first letter of Chiabrando is already accounted for in the number, so the letter in the first cutter is H for cHiabrando.
The second cutter is for the title of the book. In this case we skip the initial article La and start at Novela, following the Subject Cataloging Manual on Shelflisting’s Filing rules (G 100), Rule 13 (“Initial Articles”). Our call number is:
Freedom 7 : the historic flight of Alan B. Shepard, Jr. / Colin Burgess. (OCLC #857972968)
Call numbers with three cutters are pretty unusual in the Library of Congress classification schedule; I mainly see them in G (maps).
If you are using a class number that already has two cutters specified, such as TL789.8.U6A5 (Space travel, United States, Apollo Program), you still need to extend the call number to sort items by main entry. Rather than adding a third cutter (starting with another letter) just extend the second cutter with numbers.
For this title (about a mission from Project Mercury), I started by identifying the second cutter used for that project (M4) and checking the LC catalog to shelflist, ordering by main entry. Library of Congress already has a title in their collection about this topic by this author (“Selecting the Mercury seven”) with call number:
TL789.8.U6 M428 2011
so I shifted the cutter yet again to also order by title:
Map worlds : a history of women in cartography / Will C. van den Hoonaard. (OCLC #830352925)
This book on our shelf had the same call number as this book on a very different topic:
Sea monsters on medieval and Renaissance maps / Chet Van Duzer. (OCLC #844705228)
Both were classed under GA203, a general special class number (under Cartography–History) which is for special aspects of the subject as a whole which don’t have their own place in the classification. I moved the sea monsters book to GA781 (Cartography, European maps) which was more specific; the sea monsters aspect is still accessible via subject headings.
No new “general special” numbers are being established, and there are generally only narrow ways these classifications should be used (amorphous works, too new subjects). However, GA203 has a scope note specifying that it should be used for “cartographical sources, value of maps in boundary disputes, popes as geographers.” The topic “women cartographers” seemed similar in scope, and I couldn’t find a more specific appropriate classification, so I left it as general special.