----------------------------Original message---------------------------- Greetings, Map Catalogers and other MARC users-- After checking the USMARC Bib Formats and OCLC Bib Formats, I am curious as to the general practice for entering geographic classification codes in the 052, especially in conjunction with the use of the 072 subfield 2 lcg. More specifically, I am thinking about the 052 for those items that cover a general geographic area in addition to a subject area from Table IV. These items would have G classification numbers ending in 1 or 6. Take, for example, an item classed in G7421.N3. Would the 052 be 7420 or 7421? (On a side note, the 072 would be N3). My reason for asking this question pertains to indexing. If your system indexes the 052 and 072, what is the reason for entering geographic classification codes ending in 0 or 5 AND 1 or 6. Couldn't you just use 0 or 5 in the 052 and forget 1 or 6? Perhaps I am being shortsighted about this (which is why I am asking all of you for your insight!), but it seems to me that the user who searches on the 052 would be presented with 2 groups of hits representing 1 geographic area. Wouldn't it better serve the user to be presented with 1 group of hits rather than 2? In addition, what is the purpose of those hits ending in 1 or 6? If the user is looking for items covering a particular subject, the subject classification code (072) will allow them to search on Table IV. In addition, if they know the geographic area and the subject classification, they can search on the call number. Thanks in advance for any insight you might have and please forgive me if I am missing the obvious. Regards, Paula Paula E. Moehle Map/Media Cataloger The University of Georgia Libraries Athens, Georgia 30602-1641 706.542.0585 [log in to unmask]