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Keywords: ACTINIC
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Journal Articles
Minutes of the Proceedings of the Institution of Civil Engineers (1886) 86 (1886): 312–328.
Published: 01 January 1886
...B H THWAITE 312 THTVAITE ON HELIOGRAPHY. [Selected (Paper No. 2100.) Heliography ; or, the ActinicCopying of Engineering Drawings. By BENJAXIHNOWARTTHHWAITEA,ssoc. 31. Inst. C.E. THEadvantages of rapidity and fidelity of reproduction possessed by the actinic copying method are already well known...

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