TY  - BOOK
AU  - PASACHOFF,JAY M.
AU  - PERCY,JOHN R.
TI  - THE TEACHING OF ASTRONOMY / 
U1  - 520 
PY  - 1992///
CY  - [S.N] : 
PB  - CAMBRIBGE UNIVERSITY PRESS ، 
KW  - ASTRONOMY
ER  -