00890nam a2200229Ia 4500003000900000008004100009020001800050040001600068080002200084100002100106110003600127111008100163245017100244260004200415300001500457490002600472650002800498650004100526650002800567650002800595710003700623IN-BaIIA211028s9999    xx            000 0 eng d  a90-277-0280-2  cIIA Library  a082.2:52bIAU-S50  aFehrenbach, C. H  aIntenational Astronomical Union  aInternational Astronomical Union Symposiumn50thcArgentinad1971 Oct. 18-24 0aSpectral classification and multicolour photometrybproceedings of the IAU symposium no.50, held in Villa Carlos Paz, Argentina, October 18-24, 1971cC. H. Fehrenbach  aDordrechtbD. Reidel Publishingc1973  axiv, 314p.  aIAU Symposium; no. 50  aAstronomical Techniques  aAstronomy and Astrophysics Thesaurus  aMulti-colour Photometry  aSpectral Classification  aInternational Astronomical Union