Henderson, H. D., & Siddiqi, S. A. (1969). Analyses and improvement of a local plow. Faculty of Agricultural Sciences, American University of Beirut.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHenderson, Hubert Douglas, और Sharif Ahmed Siddiqi. Analyses and Improvement of a Local Plow. Beirut: Faculty of Agricultural Sciences, American University of Beirut, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHenderson, Hubert Douglas, और Sharif Ahmed Siddiqi. Analyses and Improvement of a Local Plow. Faculty of Agricultural Sciences, American University of Beirut, 1969.
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