00453nam a2200157Ia 4500008004100000082001600041100002100057245002800078260004600106300000800152650004100160650003400201653001500235653002700250700001800277170901s1974    xx            000 0 und d  a631.7bK95B  aKostyakof, A. N. 0aBhumi Sudhar ke Sidhant  aLucknowbU. P. Hindi Grandh Academyc1974  a472  aAgriculture and related technologies  aTechnology (Applied sciences)  aIrrigation  aIrrigation engineering  aJha, Jnardhan