000 00361 a2200145 4500
080 _a631.95
_bW 629 C
245 1 _aCrop production and environment
_cby R.O. Whyte
260 _aLondon
_c1960
650 _aAgricultural Ecology
650 _aCrop Production
650 _aEnvironment
100 1 _aWhyte, R.O.
_d
300 _a392 p. & 14 pls.
901 _a64642
999 _c45681
_d45681