Jahresberichte der Pflanzenschutzämter /
Deutscher Pflanzenschutzdienst ; im Auftrage des Bundesministers für Ernährung, Landwirtschaft und Forsten ; herausgegeben von der Biologischen Bundesanstalt für Land- und Forstwirtschaft.

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Item Link Original Source
Limited (search only)   1952 1952 The Ohio State University
Limited (search only)   1953-54 University of California
Limited (search only)   1953 1953 The Ohio State University
Limited (search only)   1954 1954 The Ohio State University
Limited (search only)   1955-56 University of California
Limited (search only)   1955 1955 The Ohio State University
Limited (search only)   1956 1956 The Ohio State University
Limited (search only)   1957-58 University of California
Limited (search only)   1957 1957 The Ohio State University
Limited (search only)   1958 1958 The Ohio State University
Limited (search only)   1959 1959 The Ohio State University