000 00319nam a2200133Ia 4500
008 160316s1955 xxu||||| |||| 00| 0 eng d
020 _a
100 _aS. Walter Allen
245 _aConserving Natural Resources
250 _a1st
260 _aLONDON
_bMcGRAW-HILL BOOK COMPANY
_c1955
300 _a432
700 _a
_a
999 _c37917
_d37917