@book{343643,
	author = {Arnon, I. and IICA, San Jose (Costa Rica)},
	title = {Factores agricolas en planificacion y desarrollo regional},
	year = {1980. },
	address = {San Jose (Costa Rica): },
	note = {IICA; Several bibliographies; Includes annexes; 14 tables; 25 illus.}
}