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Hevea brasiliensis or Para rubber : its botany, cultivation, chemistry and diseases / by Herbert Wright.
- Ferguson,
- 1906.
- Colombo :
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The Ceylon rubber exhibition, September 13th-27th, 1906 : descriptive account of the show, full list of exhibits and awards, notes on the prize exhibits and full reports of all the lectures and demonstrations / [with contrib. by J.C. Willis...et al.].
- Ferguson,
- 1906.
- Colombo [etc.] :