Hamer, Martyn.
Comets / [book] - London ; New York : F. Watts, 1984. - 32 p. : col. ill. ; 22 cm. - An Easy-read fact book . - Easy-read fact books. .
Includes index.
Describes the origin, composition, orbit, and speed of different types of comets.
0531037797 (U.S.)
83051585
Comets.
Comets.
QB721.5 / .H36 1984
523.6 HAM
Comets / [book] - London ; New York : F. Watts, 1984. - 32 p. : col. ill. ; 22 cm. - An Easy-read fact book . - Easy-read fact books. .
Includes index.
Describes the origin, composition, orbit, and speed of different types of comets.
0531037797 (U.S.)
83051585
Comets.
Comets.
QB721.5 / .H36 1984
523.6 HAM