00669nam a2200217Ia 4500008004100000082001600041100001600057245007900073260004400152300000800196650001400204650002000218653002400238653001600262653001800278700001900296700001900315942001200334999001500346952009000361170901s1957    xx            000 0 und d  a338.1bB33E  aBaum, E. L. 0aEconomic and Technical Analysis of Fertilizer Innovations and Resource Use  aUSAbThe Iowa State College Pressc1957  a393  aEconomics  aSocial sciences  aFertilizer industry  aFertilizers  aUnited States  aHeady, Earl O.  aPesek, John T.  2ddccBK  c2845d2845  00102ddc4070aRAUbRAUd2017-10-18l0o338.1 B33Ep917r2017-10-18w2017-10-18yBK