000 00322nam a2200145Ia 4500
008 170101s1958 xx 000 0 und d
082 _a535.22 W16P
100 _aWALSH, John W.T
245 0 _aPhotometry
260 _bLondon
_c1958
300 _a543p
650 _aPHOTOMETRY
653 _aPHOTOMETRY
942 _2ddc
_cB
999 _c14633
_d14633