000 00306nam a2200133Ia 4500
008 160316s1975 xxu||||| |||| 00| 0 eng d
020 _a
100 _aC R W Spedding
245 _aBiology Of Agricultural Systems
250 _a1
260 _aLONDON
_bACADEMIC PRESS
_c1975
300 _a216
700 _a
_a
999 _c24850
_d24850