TY - BOOK AU - Gallup,Gordon A. TI - Valence bond methods: theory and applications SN - 0521803926 AV - QD469 .G35 2002 PY - 2002/// CY - Cambridge ; , New York PB - Cambridge University Press KW - Valence (Theoretical chemistry) N1 - Includes bibliographical references (p. 231-233) and index ER -