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| Crop Science Published by: Madison, Crop Science Society of America (United States of America) Subject: Agriculture - Crop Production And Soil Language: English Published: 1961 ISSN: 0011-183X Available at 33 Universities. | |||
| Index of Economic Articles in Journals and Collective Volumes Published by: Nashville, American Economic Association (United States of America) Subject: Business And Economics - Abstracting Bibliographies Published: 1961 ISSN: 0536-647X Available at 2 Universities. | |||