00259nam a2200097Ia 4500008004100000082001600041100001600057245002400073260003100097650003300128120425s9999    xx            000 0 und d  a 520  MEN-S  a Menon, C P  a Sooryakudumbam (m)  b D C Books, Kottayamc1983  a Astronomy & allied sciences