Programa agricola de la Fundacion Rockefeller /

by Harrar, Jacob George 1906-, Harrar, Jacob George 1906-
Published 1957

Prospects of the world food supply

by Harrar, Jacob George 1906-, Harrar, Jacob George 1906-
Published 1966

Strategy toward the conquest to hunger

by Harrar, Jacob George 1906-, Harrar, Jacob George 1906-
Published 1967

Supervivencia o plenitud : discurso pronunciado en la Conferencia sobre los Próximos Noventa Años del Instituto de Tecnología ...

by Harrar, Jacob George 1906-, Harrar, Jacob George 1906-
Published 1968

Principios de patología vegetal /

by Stakman, Elvin Charles 1885-1979, Stakman, Elvin Charles 1885-1979, Harrar, Jacob George 1906-
Published 1968

Principios de patología vegetal /

by Stakman, Elvin Charles 1885-1979, Stakman, Elvin Charles 1885-1979, Harrar, Jacob George 1906-
Published 1963

Principles of plant pathology /

by Stakman, Elvin Charles 1885-1979, Stakman, Elvin Charles 1885-1979, Harrar, Jacob George 1906-
Published 1957

Principios de patología vegetal /

by Stakman, Elvin Charles 1885-1979, Stakman, Elvin Charles 1885-1979, Harrar, Jacob George 1906-
Published 1977