TY  - ADVS
TI  - Astronomy
PY  - 1973///
CY  - London
PB  - The Slide Centre Ltd.
KW  - Astronomy
N1  - part 1; The earth -; part 2; The sun -; part 3; The solar system 1 -; part 4; The solar system 2 -; part 5; The solar system 3 -; part 6; Concepts of time and theories on the origin of the universe -; part 7; Our home galaxy 1 -; part 8; Our home galaxy 2 -; part 9; Spiral galaxies, exploding galaxies, colliding galaxies, galaxy clusters -; part 10; Galaxies -; part 11; Observatories and telescopes -; part 12; The moon -; part 13; The moon -; part 14; Time
ER  -