000 00288nam a2200133Ia 4500
008 160316s1977 xxu||||| |||| 00| 0 eng d
020 _a
100 _aDavid S Seigler
245 _aCrop Resources
250 _a1
260 _aLONDON
_bACADEMIC PRESS
_c1977
300 _a233
700 _a
_a
999 _c6820
_d6820