000 00253pam a2200121a 44500
082 _a510
_bSa97m
100 _aSawyer, W. W.
245 1 _aMATHEMATICS
260 _aLondon
_bOdhams Press Ltd.
_c
300 _a384
964 _gCIRC
997 _a4062 C
999 _c425958
_d425958