出版日期

结果 1-10 的 12


Hoema's, hoemablokken en boschreserves in de residentie Bantam

1935

Kools, J.F.

Wageningen University & Research - Netherlands

Hoema's, hoemablokken en boschreserves in de residentie Bantam 全文

1935

Kools, J.F.

Wageningen University & Research - Netherlands


Preliminary report on resistance of alfalfa varieties to pea aphids, Illinoia pisi (Kalt) 全文

1935

Painter, R.H. | Grandfield, C.O.

National Agricultural Library - United States of America

Graphic and quantitative comparisons of land types 全文

1935

Veatch, J.O.

National Agricultural Library - United States of America

The residual effect of alfalfa cropping periods of various lengths upon the yield and protein content of succeeding wheat crops 全文

1935

Metzger, W.H.

National Agricultural Library - United States of America

Estudio de nuestras variedades de naranjas y creación de otras nuevas por polineación artificial. Orientaciones prácticas para la conquista de los mercados 全文

1935

Herrero Egaña, Manuel

Institut Valencià d'Investigacions Agràries - Spain

A coordinated program for research and extension 全文

1935

Myers, C.H.

National Agricultural Library - United States of America

Summaries of studies in agricultural education

1935

Stewart, Rolland Maclaren

National Agricultural Library - United States of America