TY - BOOK TI - Medium of instruction U1 - 371.3 PY - 1961/// CY - New Delhi PB - University Grants Commission KW - Generalities Of EducationMethods Of Instruction And StudyTHE OLD QUANTUM THEORY, THE QUANTUM THEORY, THE STATISTICAL MECHANICS, THE MASER TWO-LEVEL EXCITATION, THE ENTROPY OF M-SYSTEM, ANGULAR MOMENTUM, THE INTERACTION HAMILTONIAN MASER NOISE, THE MASER THREE LEVEL EXCITATION, MASER LEVELS IN ELECTRON PARAMAGNETS, THE AMMONIA BEAM MASER ATOMIC STRUCTURES ER -