000 00304pam a2200121a 44500
082 _a530.9
_bN219 V.2
100 _aGershenson, Daniel E.
245 1 _aTHE NATURAL PHILOSOPHER
260 _a
_bBlaisdell Publishing Company
_c1963
700 _aGreenberg, Daniel A.
964 _gCIRC
997 _a55559 C
999 _c412858
_d412858