Chemistry, Physical and theoretical 215 Theoretical physics 76 Theoretical chemistry 75 Chemistry 47 Theoretical 39 Physical chemistry 31 SCIENCE / Chemistry / Physical & Theoretical 17 A COMPREHENSIVE TRATISE ON INORGANIC AND THEORETICAL CHEMISTRY 16 Physical 14 JOURNAL OF THEORETICAL BIOLOGY 13 Laboratory manuals 13 Valence (Theoretical chemistry) 12 Mathematics 11 Molecular bonds and valances; Theoretical chemistry 11 TECHNOLOGY & ENGINEERING / Material Science 10 Chemistry, Inorganic 9 Models, Theoretical 9 Molecular structure 9 Sociology 9 Physics 8 Solid state chemistry 8 Biochemistry 7 Problems, exercises, etc 7 SCIENCE / Chemistry / Inorganic 7 Chemistry, Organic 6 Thermodynamics 6 Chemistry, physical and theoretical 5 Quantum chemistry 5 Surface chemistry 5 THEORETICAL INORGANIC CHEMISTRY 5