International Catalogue of Scientific Literature. 

 (E.) ASTRUX031Y. 



PRIMARY DIVISIONS. 



BF.GIX AT 



BIBLIOGRAPHY PILSTOKY. GENERAL .. OOOO 



SPHERICAL (GEOMETRICAL) ASTROXOMY .. OIOO 



THEORETICAL ASTRONOMY AND CELESTUL 



MECHANICS lOQO 



PRACTICAL ASTRONOMY. INSTRUMENTS 



AND METHODS OF OBSERVATION.. .. 20OO 



REDUCTION AND RECTIFICATION OF OBSER- 



^'^^TIONS 300(j 



OBSERVATIONS. DESCRIPTIVE ASTRONOMY 



AND ASTROPHYSICS .. 4000 



Solar System . . . , . . 4000 



-^^"on 4800 



Earth {Geodesy, etc.) .. 5000 



Planets, Comets. . . . ,^)500 



Stellar Universe . . . . 7000 



ANCIENT ASTRONOMY 9000 



CHRONOLOGY 9^00 



SPECTROSCOPY 



Dealt with as follows : — 



HKUI.V AT 



Instrninents ., .. .^ L'200 



Spectroscopy of Sun and 



Eclipses 4500 



Spectroscopy of Moon, Planets, 



Comets, Zodiacal Light . . 0800 



Stellar Spectroscopy (Stats, 



Xebuhv, etc.) . . . . 8000 



(e-13838) ■ 3 



