000 00274nam a22000977a 4500
008 150929b xxu||||| |||| 00| 0 eng d
082 _a333.72 PER
100 _aJARRETT HENRY.
245 _aPERSPECTIVES ON CONSERVATION.
260 _aWASHINTON;
_bRESOURCES FOR THE FUTURE,INC
_c1958.
999 _c3251
_d3251