@book{4000,
	author = {SHUGAR, GERSHON J. and BALLINEGR, JACK T.},
	title = {CHEMICAL TECHNICIANS' READY REFERENCE  HANDBOOK/ },
	publisher = {MCGRAW-HILL},
	year = {1990},
	address = {NEW YORK: },
	edition = {3},
	note = {INCLUYE INDICE.}
}