000 00475nam a22001457a 4500
008 230515b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a017:389.6(73)
_bH8
245 _aPublication of the national Bureau of standards 1901 to June 30, 1947
260 _aWashington:
_bNational Bureau of Standards Circular,
_c1948
300 _a375p.
650 _aCatalogue
653 _aInformation
942 _2udc
_cREF
999 _c29795
_d29795