000 00296pam a2200133a 44500
082 _a540
_bL566u
100 _aLessing, Lawrence P.
245 1 _aUNDERSTANDING CHEMISTRY
260 _aN. Y.
_bInterscience
_c1959
300 _a192
650 _aChemistry
964 _gCIRC
997 _a6613 C
999 _c431293
_d431293