00291nam a22001217a 4500003000400000005001700004008004100021100001700062245003200079260002900111942001200140999001700152OSt20230529113232.0230529b        |||||||| |||| 00| 0 eng d  aDuckham. A.M  aFarming System of the World  bAllied Publicationc1970  2ddccBK  c26533d26533