American journal of agricultural economics
36
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| Published: |
Menasha, Wis. : American Agricultural Economics Assoc.,
1968
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| Online Access: | http://proquest.umi.com/pqdweb?RQT=318&TS=1106034902&clientId=21690&VType=PQD&VName=PQD&VInst=PROD&pmid=27541&PageNum=1 |