@book{92344,
	author = {de Waard, P.W.F.},
	title = {Communication: Foliar diagnosis, nutrition and yield stability of black pepper (Piper Nigrum L.) in Sarawak.},
	publisher = {Koninklijk Institute Veor De Tropen},
	year = {1965},
	series = {Royal Tropical Institute Department of Agricultural Research, Communication; no.58},
	address = {Amsterdam}
}