TY  - BOOK
AU  - Ingalls,Albert Graham
TI  - Amateur telescope making advanced, (book two) : : collection of con ributions to amateur precision optics, by numerous authorities / 
U1  - 681.412 
PY  - 1959///
CY  - New York : 
PB  - Scientific American, 
KW  - Telescope, Reflecting
N1  -  ''A sequel to Amateur telescope making, book one.'';  Includes bibliographical references
ER  -