00465nam a2200157Ia 4500008004100000020001500041082001600056100002300072245005000095260004900145300000800194650004100202650003400243653001600277653001400293170901s1973    xx            000 0 und d  a0716705931  a630.9bH51S  aHeiser, Charles B. 0aSeed to civilizationbThe Story of Man's Food  aSan FranciscobW.H.Freeman and Companyc1973  a243  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgriculture  aGeography