An introduction to astronomy :
Khan, A. K. M. Khalilur Rahman.
An introduction to astronomy : with numerous examples and examination papers / A. K. M. Khalilur Rahman Khan. - 2nd rev. and enl. ed. - Dacca : Students publications, [1973] - ii, 359 p. : ill. ; 22 cm.
Astronomy.
520
An introduction to astronomy : with numerous examples and examination papers / A. K. M. Khalilur Rahman Khan. - 2nd rev. and enl. ed. - Dacca : Students publications, [1973] - ii, 359 p. : ill. ; 22 cm.
Astronomy.
520