APA-referens

Gurmel Singh. (1990). mannual of soil and water conseervation Practices. Oxford and IBH publishing.

Chicago-stil citat

Gurmel Singh. Mannual of Soil and Water Conseervation Practices. New Delhi: Oxford and IBH publishing, 1990.

MLA-referens

Gurmel Singh. Mannual of Soil and Water Conseervation Practices. Oxford and IBH publishing, 1990.

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