TY  - BOOK
AU  - Mayall,R.Newton
AU  - Mayall,Margaret W.
AU  - Wyckoff,Jerome
AU  - Polgreen,John
TI  - The sky observer's guide: a handbook for amateur astronomers 
SN  - 0307240096 :
AV  - QB64 .M3 1977
U1  - 523 
PY  - 1977///
CY  - New York
PB  - Golden Press
KW  - Astronomy
KW  - Observers' manuals
KW  - Amateurs' manuals
N1  - Includes index; Bibliography: p. 146-147
UR  - http://www.archive.org/details/skyobserversguid00maya
UR  - http://www.openlibrary.org/books/OL4581918M
ER  -