000 00359nam a2200169Ia 4500
008 160615s9999 xx 000 0 und d
100 _aWALSH(John W T)
245 _aPhotometry
250 _a2nd ed.
260 _aLondon
260 _bConstable
260 _c1953
300 _axxiv p. + 544
942 _cBooks
999 _c8631
_d8631