Dyfyniad APA

International Symposium on Soil Fertility Evaluation New Delhi, India. (1971). International Symposium on Soil Fertility Evaluation proceedings. Indian Society of Soil Science Indian Agricultural Research Institute.

Dyfyniad Arddull Chicago

International Symposium on Soil Fertility Evaluation New Delhi, India. International Symposium on Soil Fertility Evaluation Proceedings. New Dehli: Indian Society of Soil Science Indian Agricultural Research Institute, 1971.

Dyfyniad MLA

International Symposium on Soil Fertility Evaluation New Delhi, India. International Symposium on Soil Fertility Evaluation Proceedings. Indian Society of Soil Science Indian Agricultural Research Institute, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.