00485nam a2200193Ia 4500008004100000040000600041041001200047082001000059082001100069100001600080245004100096245001600137260001300153260003500166260000900201300005500210300001000265650001600275141004s9999    xx            000 0 und d  ca  aEnglish  a631.4  bNAY/NU  aVK   Nayyar  aNutritional disorders in field crops  cVK   Nayyar  aLudhiana  bPunjab agricultural university  c2000  a73 p.                                               b24 cm  aField crops