TY - BOOK AU - Horrigan, Philip A. (Philip Archibald) TI - The challenge of chemistry AV - QD 33 .H67 1970 PY - 1980/// CY - Stony Creek, Conn. PB - Marshland KW - CHEMISTRY N1 - Includes index; Chapter 1. General -- 2. Structure of the atom -- 3. The elements and their families -- 4. Chemical bonding -- 5. Names, formulas, and equations -- 6. Research in universities ER -