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RUBBER
Plate I.
Fig. 11.—PARA RUBBER PLANTATION, CEYLON.
Fig. 12.—PARA RUBBER TREES, TAPPED—CEYLON.
(Spiral and V Systems.)
From Photographs in the Collection of the Imperial Institute.
Fig. 11.—PARA RUBBER PLANTATION, CEYLON.
Fig. 12.—PARA RUBBER TREES, TAPPED—CEYLON.
(Spiral and V Systems.)
From Photographs in the Collection of the Imperial Institute.
