TY - BOOK AU - Branley,Franklyn Mansfield AU - Maestro,Giulio TI - Comets SN - 0690044143 : AV - QB721.5 .B73 1984 U1 - 523.6 19 PY - 1984/// CY - New York PB - Crowell KW - Comets KW - Juvenile literature KW - Halley's comet N1 - "Ages 5-8, Grs K-3"--Jacket N2 - Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet ER -