000 00293nam a22000977a 4500
008 240715b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aTechnical paper
260 _aWashington, D.C.:
_bUS Department of Commerce
942 _cCR
_2udc
999 _c64403
_d64403