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161
by Espenschied, Roland Frederick, 1921-
[Ann Arbor, Mich. : University Microfilms, 1974

Thesis Book
162
by Stern, Thomas Noel, 1913-
Philadelphia, 1945

Thesis Book
164
by Berry, William Julius, 1891-
[Chicago] 1940

Thesis Book
165
by Leskinen, Pekka
Joensuu : Joensuun yliopisto, 2001

Thesis Book
167
by Wasmer, Kurt
Basel : In Kommission beim Verlag Wepf, 1984

Thesis Book
168
by Weitzell, E. C.
College Park, Md. : University of Maryland agricultural experiment station, 1937

Thesis Book
174
by Molestina Escudero, Carlos Julio, 1934-
Turrialba, Costa Rica : Instituto Interamericano de Ciencias Agrícolas de la OEA, Centro de Enseñanza e Investigación, 1969

Thesis Book
175
by Poppel, F. W. A. van
Wageningen : Afd. Agrarische Geschiedenis, Landbouwuniversiteit, 1992

Thesis Book
178
by O'Neill, Eugene James, 1922-
[Ann Arbor, Mich., University Microfilms, 1974

Thesis Book
180
by Hale, Gerry Alwyn, 1933-
[Ann Arbor, Mich., University Microfilms, 1973

Thesis Book