@book{2060,
	author = {Cardona Guiza, Ademar and Ruíz Roa, Octavio},
	title = {Proyecto Comercializadora de Insumos Agrícolas Proinsumos Ltda /},
	publisher = {Unillanos,},
	year = {1999.},
	address = {Villavicencio :}
}