00397nam a2200169Ia 4500008004100000041001200041082001000053082001100063100001700074100001100091245004600102260001100148260001800159260000900177300001500186650002600201150901s9999 xx 000 0 und d aEnglish a631.3 bMIC/PR aMichael AM  eAuthor aPrinciples of agricutural engineering V.2 aBhopal bJain Brothers c1966 a534 Pages aAgriculture surveying