TY - BOOK AU - Burnham, Robert , TI - Practical skywatching: nature companions SN - 9781876778910 U1 - 520 BUR PY - 2002/// CY - San Francisco PB - Five Mile Press KW - Astronomy & allied scie~ces KW - O`Byrne, John KW - History KW - David H. Levy N1 - Includes glossary ER -