Dukhovnye stikhi starinnye. (OCLC #923383989)

We received two gift volumes that have identical title pages (without much metadata), and so extremely similar description:

245 00 ǂa Dukhovnye stikhi starinnye.
264 _1 ǂa [Place of publication not identified] : ǂb [publisher 
    not identified], ǂc [between 1950 and 2015?]

but different content beyond that.

They have slightly different numbers of pages, so copy catalogers with similar pieces should be able to determine which record to choose. The page numbers are in Church Slavic though, so I wish them luck!