000 00302nam a22001337a 4500
020 _a9781330429068
082 _a576 SPE
100 _aSpencer, Herbert
245 _athe Factors of Organic
260 _aNew York
_bD. Appleton And Company
_c2017
300 _a76
650 _aEvolution
942 _cBK
999 _c20507
_d20507