@book{7074,
	author = {Romburgh, Pieter van.},
	title = {Les plantes a caoutchouc et a gutta-percha sultivées aux Indes néerlandaises.},
	publisher = {G. Kolff & co.,},
	year = {1903.},
	address = {Batavia,},
	note = {Translation of his work in Dutch: Caoutchouc en getah-pertja in Nederlandsch-Indiä, which was no, 39 of the Mededeelingen van's lands plantentuim.}
}