“…RaLa process development work is well documented. (Baldwin and Savolainen, 1947;Eister, 1949;Higgins, 1951;Blanco, 1951;Blanco and Kibbey, 1951;Schubert, 1945;Higgins et al, 1950;Blanco, 1952a;Culler et al,-1949;Blanco, 1952b;.Unger, 1951;~Thompson,. 1949) .…”