Study paper
Consultative Group on International Agricultural Research
World Bank
Grant M. Scobie
World Bank 1987 Study paper / Consultative Group on International Agricultural Research no. 24
所蔵館3館
Hisham El-Akhrass
World Bank c1986 Study paper / Consultative Group on International Agricultural Research no. 13
所蔵館2館
Rigoberto Stewart
World Bank c1985 Study paper / Consultative Group on International Agricultural Research no. 5
: pbk
所蔵館1館