Frontiers of chemistry : plenary and keynote lectures presented at the 28th IUPAC Congress, Vancouver, British Columbia, Canada, 16-22 August 1981 / edited by Keith J. Laidler ; International Union of Pure and Applied Chemistry in conjunction with the Chemical Institute of Canada. (OCLC #8114998)
When classifying conference proceedings in Library of Congress Classification, use the year that the conference occurred, not the year when the volume was published (often the following year).
This volume was published in 1982, but covers a conference from 1981, so the call number is:
QD1 .F76 1981