00486nam a2200157Ia 4500008004100000082002000041100001700061245005000078250000600128260007200134300000800206650004100214650003400255653002700289653001200316170901s1969    xx            000 0 und d  a631.30913bH80F  aHopeen, H.J. 0aFarm Implements for arid and Tropical Regions  a1  aRomebFood and Agriculture Organization of the United Nationsc1969  a159  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural machinery  aTropics