Explore the fundamental principles of dynamo theory and cosmic magnetism with this vital collection. Delve into the intricate processes behind the generation of magnetic fields in our Sun and planets, featuring key research from astrophysics and geophysics. This compilation offers deep insights into solar dynamos and planetary dynamos, reflecting the state of knowledge in 1992. An indispensable reference for researchers, university students, and academic libraries across India keen on understanding stellar and planetary physics.