@book{342746,
	author = {Muller, S. and IICA, San Jose (Costa Rica)},
	title = {Como medir la sostenibilidad : una propuesta para el area de la agricultura y de los recursos naturales; how to measure sustainability : an approach for agriculture and natural resources},
	publisher = {IICA/BMZ/GTZ, },
	year = {1996. },
	address = {San Jose (Costa Rica): },
	note = {IICA; Several bibliographies}
}