j p n l roorda van eysinga

J. P. N. L. Roorda van Eysinga · Center Agricultural Pub & Document

130 sayfa · 1981

Vegetables, diseases and pests / Nutrition disorders

J. P. N. L. Roorda Van Eysinga · Centre for Agricultural Publishing and Documentation

56 sayfa · 1971

Deficiency diseases in plants / Diseases and pests / Lettuce

J. P. N. L. Roorda van Eysinga · Centrum voor landbouwpublikaties en landbouwdocumentaties

18 sayfa · 1966

Lettuce / Nitrogen fertilizers

J. P. N. L. Roorda van Eysinga · Centre for Agricultural Publishing and Documentation

17 sayfa · 1971

Fertilizers / Nitrogen fertilizers / Tomatoes

J. P. N. L. Roorda van Eysinga · Centre for Agricultural Publishing and Documentation

10 sayfa · 1971

Fertilizers / Phosphatic fertilizers / Tomatoes

J. P. N. L. Roorda van Eysinga · Pudoc

46 sayfa · 1970

Cucumbers / Deficiency diseases in plants / Diseases and pests

J. P. N. L. Roorda Van Eysinga · Centre for Agricultural Publishing and Documentation

25 sayfa · 1971

Fertilizers / Greenhouse management / Lettuce / Phosphatic fertilizers / Phosphorus content