00624nam a22001697a 4500003000400000008004100004020001500045082001600060100002600076245017800102260004500280300001100325650004200336650003500378650001900413700002200432OSt221020b        |||||||| |||| 00| 0 eng d  a0210271000  a631.8bR16S  aRajan, S.V. Govinda    a Soil and crop productivity a handbook for the use of workers in agricultural extension, vocational agriculture and farmers in India/by S.V. Govind Rajan and H.G. Gopala Rao  aBombay: bAsia Publishing House, c1971.  a313 p.  aAgriculture and related technologies   aTechnology (Applied sciences)   aSoil fertility  aRao, H.G. Gopala