=LDR 00000nam a2200000ui 4500 =001 5111 =008 250530s1981\\\\xx\|||||||||||||||||eng\d =082 04$a631.4 HUD =100 1\$aHudson, Norman =245 10$aSoil conservation =260 \\$aLondon :$bB. T. Batsford,$c1981 =852 \\$bFreeman Library$cBooks$h631.4 HUD