00398pab a2200157 454500008004000000100002600040245005100066260000900117300001300126362000800139650003000147650002800177650001000205650000900215773001600224180718b2013   xxu||||| |||| 00| 0 eng d  aShivay, Yashbir Singh  aZinc vital to crop production and porductivity  c2013  ap.44-48.  aNov  aAgricultural productivity  aAgricultural production  aCrops  aZinc  aKurukshetra