Bear, Frman E.
Hunger signs in crops : a symposium / Firman e. bear (et.al.) - Washington : The American Society of Agronomy, 1949. - xvi, 390 p. : ill, ; 25 cm.
includes bibliographical references and index.
632 / BEH
Hunger signs in crops : a symposium / Firman e. bear (et.al.) - Washington : The American Society of Agronomy, 1949. - xvi, 390 p. : ill, ; 25 cm.
includes bibliographical references and index.
632 / BEH