@book{20525,
	author = {Doeksen, J. and Van der Drift, J.},
	title = {Soil organisms; proceedings of the Collo quiun of soil fauna, soil microflora and their relationships. Oosterbeek, The Netherland, Sept. 10-16, 1962},
	publisher = {North-Holland,},
	year = {1963},
	address = {Amsterdam :}
}