The System of open star clusters and our galaxy /
Alter, G.
The System of open star clusters and our galaxy / G. Alter and J. Ruprecht. - 1a ed. - New York : Academic press, c1963 - 53 p. : il. ; 24 cm. + 36 folletos del mapa (48 x 16 cm.) - Czechoslovak academy of sciences .
Costelaciones
QB801 / A58 1963
The System of open star clusters and our galaxy / G. Alter and J. Ruprecht. - 1a ed. - New York : Academic press, c1963 - 53 p. : il. ; 24 cm. + 36 folletos del mapa (48 x 16 cm.) - Czechoslovak academy of sciences .
Costelaciones
QB801 / A58 1963