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Estimation or biological and economical crop yields in cropping patterns diffiring in cereal crop ratio

Abd El-Aziz, Gamal Ibrahim.

Estimation or biological and economical crop yields in cropping patterns diffiring in cereal crop ratio [microform] / Gamal Ibrahim Abd El-Aziz. - 1990. - 60, 3 leaves : ill. ; 30 cm.

Thesis (M.S.)-- Cairo University, 1990.

Includes bibliographical references (leaves 53-60)

Microfiche.
ASUNET,
Ain Shams University,
1 microfiches : negative.

Summary in Arabic.

Subjects--Topical Terms:
Crop rotation
Crop rotation--Economic aspects.

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