proceedings of the second confernce of the agricultural development research. (cairo. (1988). proceedings of the second confernce of the agricultural development research. ain shams university.

proceedings 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.

proceedings of the second confernce of the agricultural development research. (cairo. Proceedings of the Second Confernce of the Agricultural Development Research. ain shams university, 1988.