000 00312nam a2200133Ia 4500
008 160316s1979 xxu||||| |||| 00| 0 eng d
020 _a
100 _aC R W Spedding
245 _aIntroduction To Agricultural Systems
250 _a1
260 _aLONDON
_bAPPILED SCIENCE
_c1979
300 _a169
700 _a
_a
999 _c24851
_d24851