@book{342707,
	author = {Bolivar, H. and Servicio Internacional para la Investigacion Agricola Nacional, Haya (Netherlands)},
	title = {Sistemas de Informacion Gerencial (SIG). Fasciculo 6},
	publisher = {IICA/ISNAR, },
	year = {1997?. },
	address = {Quito (Ecuador): },
	note = {46 ref.; 12 illus.; 9 tables}
}