@book{6450,
	author = {Van der Zee, J J},
	title = {Development of non-irrigate land use of the Ribeira grande Valley/ J. J. Van der Zee ; M. C. J. Damen ; H. J. Van Dijk},
	publisher = {Van der Zee & Plaisier,},
	year = {1983},
	address = {Enschede:}
}