ive been wanting to borrow "understanding movies" by Giannetti from Fisher library. the catalogue says "check shelf" yet I cant find it on shelf at all, not even at the short loans. this is happened with a number of other books i've been looking for. ive also checked the sorting shelves. has anyone else encountered this? also, the call number is 791.43 171 D so does the 'D' change anything? thanks