%0 Journal Article %A Hiroyuki Osada %T Note on the class-number of the maximal real subfield of a cyclomatic field. %J Manuscripta mathematica %D 1987 %P 215-228 %V 58 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1987__58_155219/ %F MM2_1987__58_155219