00358nam a2200157Ia 4500008004100000041001200041082001000053082001100063100001600074100001100090245002300101260000900124260002900133260000900162650002900171150909s9999    xx            000 0 und d  aEnglish  a631.3  bACO/FA  aAcock A M    eAuthor  aFarm mechanisation  aRome  bFAO of the United Nation  c1952  aAgricultural engineering