TY  - BOOK
AU  - ROBBINS, JAMES M
TI  - PRACTICAL ASTRONOMY: A TEXT BOOK FOR ENGINEERING SCHOOLS ND A MANUAL OF FIELD METHODS
U1  - B9:F3 
PY  - 1948///
CY  - NEW YORK
PB  - JOHN WILEY & SONS
KW  -  ASTRONOMY
KW  - MATHEMATICAL STATISTICS
ER  -