for example, this one:
http://www.ams.org/mathscinet-getitem?mr=0215729
the journal has the number like "MR215729 (35 #6564)"
I wanna know what does the 35 #6564 means...
because for some references, it just quote "MR 21 #852",
which i cannot find the MR number, which is "215729" like the previous one.
sounds weird enough to me :(