000 00615nam a22002177a 4500
999 _c1839
_d1839
003 OSt
005 20210604095220.0
008 121001b xxu||||| |||| 00| 0 eng d
020 _a771572190
040 _cYeshi
082 _a363.7 WEB
100 _aWebb, Leonard.
245 _aMan and environment :
_bconservation of natural resources /
_cLeornard Webb.
260 _aCanada :
_bGage Educational Publishing,
_c1973.
300 _a83 p. :
_bill. ;
_c21 cm.
504 _aIncludes index.
650 _aHuman ecology.
650 _aConservation of natural resources.
650 _aPopulation.
942 _2ddc
_cBK