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The plantation rubber industry in the Middle East
Figart, David Milton, (1925)
The rubber industry in the Middle East
Galang, Francisco G., (1928)
Estate and native plantation rubber in the Middle East 1929
Whitford, H. N., (1930)
Agricultural development in Southeastern Asia and Malaysia : a report on his observations while cruising with the Governor-General of the Philippine Islands, on the U.S.S. Pittsburgh, from February 28 to April 14, 1931
Alunan, Rafael R., (1931)
Annual report of the secretary of agriculture and natural resources : for the year ending June 30, ...
(1950)