00503nam a2200181Ia 4500008004100000020001500041082001600056100002300072245004400095250000600139260005100145300000800196650004100204650003400245653001600279653001700295653000900312170901s1981    xx            000 0 und d  a0716712644  a630.9bH51S  aHeiser, Cbarles B. 0aSeed to CivilizationbThe Story of Food  a2  aSan FranciscobW. H. Freeman and Companyc1981  a254  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgriculture  aCivilization  aFood