prepared under the direction of the Advisory Committee on Social and Economic Research in Agriculture ; [edited by] John D. Black ; [exective secretary ...] V.N. ValgrenSocial Science Research Council1932
全国の図書館
- 著者標目Social Science Research Council (U.S.) Black, John D. (John Donald) Valgren, Victor Nelson
by V. N. ValgrenUnited States. Dept. of Agriculture1928
全国の図書館
- 著者標目United States. Dept. of Agriculture Valgren, Victor Nelson
by V.N. Valgren, Harry E. Roethe and M.C. Betts[U.S. Dept. of Agriculture][1930]
全国の図書館
- 著者標目Valgren, Victor Nelson Roethe, Harry E. (Harry Edwar...
by Victor N. ValgrenUniversity of Chicago Pressc1924
全国の図書館
- 著者標目Valgren, Victor Nelson
by V.N. ValgrenGovernment Printing Office1921
全国の図書館
- 著者標目Valgren, Victor Nelson
by V. N. Valgren and Elmer E. EngelbertGovernment Printing Office1826
全国の図書館
- 著者標目Valgren, Victor Nelson Engelbert, Elmer Eugene
by V.N. Valgren and Elmer E. EngelbertG.P.O.1921
全国の図書館
- 著者標目Valgren, Victor Nelson Engelbert, Elmer E.
by V.N. ValgrenG.P.O.1920
全国の図書館
- 著者標目Valgren, Victor Nelson
by V.N. Valgren[G.P.O.]1919
全国の図書館
- 著者標目Valgren, Victor Nelson
by V.N. ValgrenU.S. Dept. of Agriculture1920
全国の図書館
- 著者標目Valgren, Victor Nelson United States. Dept. of Agric...
by V.N. Valgren and Elmer E. Engelbert[U.S. G.P.O]1890
全国の図書館
- 著者標目Valgren, Victor Nelson Engelbert, Elmer Eugene
by V.N. ValgrenGovt. Print. Off.1917
全国の図書館
- 著者標目Valgren, Victor Nelson
by V.N. ValgrenG.P.O.1917
全国の図書館
- 著者標目Valgren, Victor Nelson