00348nam a2200121Ia 450000500170000000800410001702000150005805000210007310000210009424500580011526000340017365000190020720251229192455.0251229s9999    xx            000 0 und d  a0080181155  aSB 185 .L82 1975  aLockhart, J.A,R. 0aIntroduction to crop husbandry .cJ.A,R Lockhart, J.A  aOxfordb Pergamon pressc1978  a1. Field Crops