LEADER 01879oam  2200541I  450 
001 9910711783703321
005 20181227112908.0
035   $a(CKB)5470000002486231
035   $a(OCoLC)953209327
035   $a(OCoLC)995470000002486231
035   $a(EXLCZ)995470000002486231
100   $a20160707d1977      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 12$aA device for automatic photoelectric control of the analytical gap for emission spectrographs /$fby John A. Dietrich, Elmo F. Cooley, and Kenneth J. Curry
210  1$a[Reston, Virginia] :$cUnited States Department of the Interior, Geological Survey,$d1977.
215   $a1 online resource (iii, 5 pages) $cillustrations
225 1 $aGeological Survey circular ;$v748
320   $aIncludes bibliographical references (page 5).
606   $aEmission spectroscopy
606   $aOptoelectronic devices
606   $aSpectrum analysis$xInstruments
606   $aEmission spectroscopy$2fast
606   $aOptoelectronic devices$2fast
606   $aSpectrum analysis$xInstruments$2fast
615  0$aEmission spectroscopy.
615  0$aOptoelectronic devices.
615  0$aSpectrum analysis$xInstruments.
615  7$aEmission spectroscopy.
615  7$aOptoelectronic devices.
615  7$aSpectrum analysis$xInstruments.
700   $aDietrich$b John A.$01418016
702   $aCooley$b E. F.
702   $aCurry$b Kenneth J.
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bOCLCA
801  2$bGPO
906   $aBOOK
912   $a9910711783703321
996   $aA device for automatic photoelectric control of the analytical gap for emission spectrographs$93528146
997   $aUNINA