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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিproceedings of the second confernce of the agricultural development research. (cairo. Proceedings of the Second Confernce of the Agricultural Development Research. cairo: ain shams university, 1988.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিproceedings of the second confernce of the agricultural development research. (cairo. Proceedings of the Second Confernce of the Agricultural Development Research. ain shams university, 1988.
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