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9. Oversize differs between gen collection, N and M call numbers, limited access, and atlases. Ref collections have no oversize.
9A. Subfield Subfield k is needed for oversize items except for locations of Atlas oversize and Atlas oversize flat.
10. When giving a permanent location it is bird followed by the first letter of the class number except for h with these exceptions .
d which is divided between d (D mono) and da (DA-DX)
h which is divided between h and hm.-hd (H-HD2200) and hd- (HD2321 and over) ;
n which is divided between n (N and NA mono) and nb (NB and over)
tr moved to Bird (Sept. 2022- )
11. DVDs, CD-ROMs, CDs, etc. are identified in an 866 by the term used in the 300 +e. If there are multiple items (2 CD-ROMS, 2 CDs, etc.) they become discs in the 866 i.e. disc 1-disc 2.
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