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5
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Possibilities for Para rubber production in the Philippine islands / by C.F. Vance...[et al.].
- 853
- Government Printing Office,
- 1925.
- Washington, DC :
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International trade in leaf and manufactured tobacco / by T.L. Hughes.
- Government Printing Office,
- 1925.
- Washington, DC :
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Trade in Philippine copra and coconut oil / by E.D. Gothwaite.
- Government Printing Office,
- 1925.
- Washington, DC :
-
Dielectric constant, power factor and resistivity of rubber and gutta-percha / by H.L. Curtis and A.T. McPherson.
- Government Printing Office,
- 1925.
- Washington, DC :
-
The plantation rubber industry in the Middle East / by David M. Figart.
- 850.1
- Government Printing Office,
- 1925.
- Washington, DC :