O'Dwyer, M. F. 1930- Valency / M. F. O'Dwyer, J. E. Kent, R. D. Brown - New York : Springer-Verlag, 1978 - xi, 251 p. : ill. ; 24 cm. - Heidelberg science library . ISBN: 0387902686 Subjects--Topical Terms: Valence (Theoretical chemistry)