by (United Kingdom)R.Border; (United States)McGraw-Hill Modern Scientists; by (United Kingdom)R.Courtney; (United States)Reader's Digest; by (United Kingdom)V.Kay;by (United States)L.Alexander...et al; by (United Kingdom)N.Harvey;by (United States)R.E.Phillips; by (United Kingdom)D.Kramer;by (United States)A.I.Miller; by (United Kingdom)J.P.Todd;by (United States)E.E.Anderson; by (United Kingdom)J.W.Harris;by (United States)Edgar Bodenheimer;