000 00391nam a2200169Ia 4500
008 180424s9999 xx 000 0 und d
020 _a716709465
084 _a551.22 S1
245 0 _aBiosphere
250 _a\\197000ENGGPSX
260 _aW h Freeman
260 _b1970
260 _cSanfrancisco
300 _aviii+134 p
500 _aincludes index and biblioraphy
942 _cBK
999 _c37321
_d37321