00891nam a2200253 i 450099100116394970753620020507112121.0970308s1969 ne ||| | eng b10182640-39ule_instLE00643204ExLDip.to Fisicaita52.9.5252.9.53Minnaert, M.G.J.462971Pratical work in elementary astronomy /M.G.J. MinnaertDordrecht :D. Reidel Publ. Co.,c1969xxiii, 247 p. :ill. ;24 cm.Astronomy.b1018264021-09-0627-06-02991001163949707536LE006 52.9.52+52.9.56 MIN12006000028462le006-E0.00-l- 00000.i1022382427-06-02Pratical work in elementary astronomy190639UNISALENTOle00601-01-97ma -engne 01