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5261. Lead silicates. X-ray studies of compounds in system PbO-SiO2 [with list of references]; by Howard F. McMurdie and Elmer N. Bunting.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1251

5262. Lead sulphate. Solubility of lead sulfate in solutions of sulfuric acid, determined by dithizone with photronic cell [with list of references]; by D. Norman Craig and George W. Vinal.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1165

5263. Lead-boron-silicon-oxide system. System PbO-B2O3-SiO2; by R. F. Geller and E. N. Bunting.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1231

5264. Lime. Particle size and plasticity of lime; by Dana L. Bishop.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1232

5265. Magnetic testing. Apparatus for magnetic testing at magnetizing forces up to 5,000 oersteds; by Raymond L. Sanford and Evert G. Bennett.

Corporate/Agency Authors:: National Bureau of Standards
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1242

5266. Mean values. Approximation to a function of one variable from a set of its mean values [with list of references]; by Martin Greenspan.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1235

5267. Metallic coatings. Dropping tests for measuring thickness of zinc and cadmium coatings on steel; by Abner Brenner.

Corporate/Agency Authors:: National Bureau of Standards
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1240

5268. Metric system. International metric system [chart]. [Edition of 1939.]

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939]
SuDoc number:: C 13.10:3/7

5269. Moldings. Hardwood interior trim and molding, recorded standard of the industry.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: 1939
SuDoc number:: C 13.20:76

5270. Mortars. Properties of air-setting refractory-bonding mortars of wet type; by Raymond A. Heindl and William L. Peudergast.

Corporate/Agency Authors:: National Bureau of Standards and Commerce Department
Publisher:: National Bureau of Standards
Date:: [1939.]
SuDoc number:: C 13.22/a:1219

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