by (United States)Herbert Schildt;by (United States)Yuksel Uckan; by (United States)Herbert S.Kindler;by (United States)Ashley Bryan; by (United States)Herbert Schildt;by (United States)Joseph Fred Chabot; by (United States)Robert S.F.;by (United States)Donald E.K.; by (United States)Herbert A. deViries;by (United States)H.J. de Blij; by (United States)Herbert Goldstein;by (United States)Herbert Glodstein; by (United States)Robert L.H.;by (United States)Edward J.W.; by (United States)Robert O'Neill;by (United States)R.O'Neill; by (United States)Robert Seeley;by (United States)Margaret L.Lial; by (United States)Robert Wesson;by (United States)H.Klehr;