00433nam a2200157Ia 4500008004100000020001800041082001600059100001900075245002200094260003100116300000800147650004100155650003400196653002200230700002300252170901s2009    xx            000 0 und d  a9788176222013  a631.4bK93S  aKohnke, Helmut 0aSoil Conservation  aDelhibBiotech Booksc2009  a298  aAgriculture and related technologies  aTechnology (Applied sciences)  aSoil conservation  aBertrand, Anson R.