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At least 127 records · Page 7Linked to original sources

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Biodiversity Heritage Library1978

Economic effects of controls on nitrogen fertilizer — Illustration, BHL page 16526264

Control↗

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Biodiversity Heritage Library1978

Economic effects of controls on nitrogen fertilizer — Illustration, Page 10

Control↗

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Biodiversity Heritage Library1978

Economic effects of controls on nitrogen fertilizer — Illustration, Page 9

Control↗

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Biodiversity Heritage Library1978

Economic effects of controls on nitrogen fertilizer — Illustration, Page 5

Control↗

Biodiversity Heritage Library1913

Manganese as a fertilizer — Illustration, BHL page 17669633

Manganese as a fertilizer↗

Biodiversity Heritage Library1913

Manganese as a fertilizer — Illustration, BHL page 17669648

Manganese as a fertilizer↗

Biodiversity Heritage Library1907

The cultivation of citrus fruits; a short treatise with special reference to fertilization — Illustration, BHL page 18261333

Chile saltpeter↗

Biodiversity Heritage Library1907

The cultivation of citrus fruits; a short treatise with special reference to fertilization — Illustration, BHL page 18261339

Chile saltpeter↗

Biodiversity Heritage Library1907

The cultivation of citrus fruits; a short treatise with special reference to fertilization — Illustration, BHL page 18261374

Chile saltpeter↗

Biodiversity Heritage Library1921

The law of births and deaths; being a study of the variation in the degree of animal fertility under the influence of the environment — Illustration, BHL page 18764260

Fertility↗

Biodiversity Heritage Library1921

The law of births and deaths; being a study of the variation in the degree of animal fertility under the influence of the environment — Illustration, BHL page 18764266

Fertility↗

Biodiversity Heritage Library1921