Citace podle APA (7th ed.)

Usman, K., Khalil, S. K., & Ghulam, S. (2012). Tillage and N Impact on Wheat Production and N Efficiency under Rice-Wheat Cropping System in Northwestern Pakistan. Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist).

Citace podle Chicago (17th ed.)

Usman, Khalid, Shad Khan Khalil, a Said Ghulam. "Tillage and N Impact on Wheat Production and N Efficiency Under Rice-Wheat Cropping System in Northwestern Pakistan." Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) 2012.

Citace podle MLA (9th ed.)

Usman, Khalid, et al. "Tillage and N Impact on Wheat Production and N Efficiency Under Rice-Wheat Cropping System in Northwestern Pakistan." Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist), 2012.

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