Ibrahim, M. A. (1990). Response of dwarf elephant grass (Pennisetum purpureum Schum) to different frequencies and intensities of grazing in the humid zone of Guápiles, Costa Rica.

Ibrahim, Muhammad Akbar. Response of Dwarf Elephant Grass (Pennisetum Purpureum Schum) to Different Frequencies and Intensities of Grazing in the Humid Zone of Guápiles, Costa Rica. 1990.

Ibrahim, Muhammad Akbar. Response of Dwarf Elephant Grass (Pennisetum Purpureum Schum) to Different Frequencies and Intensities of Grazing in the Humid Zone of Guápiles, Costa Rica. 1990.