541.076 Sill P Sillén, Lers Gunnar. Problems in physical chemistry by Lers Gunnar Sillén, Paul W. Lenge (and) Carl O. Gabrielson. Englewood Cliffs, N.J., Prentice-Hall (1964, c1952) xi, 370 p. diagrs. 22 cm. (Prentice-Hall chemistry series)