Fertilizer requirements and availabilities (western Europe, with special attention to France, Italy, Western Germany, and Austria) [electronic resource].
Record is based on bibliographic data in ProQuest U.S. Serial Set Digital Collection (last viewed Mar. 2008). Reuse except for individual research requires license from ProQuest, LLC. AVAILABLE ONLINE TO AUTHORIZED PSU USERS.
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Electronic resource. [Bethesda, Md.]: ProQuest, 2004. (ProQuest U.S. Serial Set Digital Collection : no. 11123 H.rp.1148).