Byerlee, D., Alex, G. Strengthening National Agricultural Research Systems. Washington: The World Bank, 1998 X, 87 с. : с диагр, 0-8213-4173-1.
Byerlee, D., Alex, G. Strengthening National Agricultural Research Systems. Washington: The World Bank, 1998 X, 87 с. : с диагр, 0-8213-4173-1.
Byerlee, D., Alex, G. (1998) Strengthening National Agricultural Research Systems, Washington: The World Bank X, 87 с. : с диагр, 0-8213-4173-1.
Byerlee, D., & Alex, G. (1998). Strengthening National Agricultural Research Systems. Policy Issues a. Good Practice. Washington: The World Bank, X, 87 с. : с диагр.
Byerlee D, Alex G. Strengthening National Agricultural Research Systems: Policy Issues a. Good Practice. Washington: The World Bank; 1998. p. X, 87 с. : с диагр. ISBN: 0-8213-4173-1.