Chemistry: experiments and principles Paul R. O'Connor [and others. O'Connor, Paul R. Chemical Education Material Study. Chemistry, an experimental science. Chemistry. QD33 .C493 540 OCC Based on the work of the Chemical Education Material Study, published in 1963 under title: Chemistry, an experimental science. Boston : Raytheon Education Co., 1968. 1968. 1968 Text ix, 447 p. : eng