Excerpt from Extent and Composition of the Incrustation on Some Filter Sands: Thesis
From the above we have been led to make an investigation to ascertain the condition of sends in the Illinois filters. We wrote to several filter plant Qperators asking for samples of sand which had been in use for some time. Five samples were received. We are indebted to Mr. C. H. Cobb, of Kankakee, Mr. H. M. Ely of Danville, Mr. W. H. Gelston of Quincy, and Mr. W. Olson of Moline for the samples and data concerning them.
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HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LX-9780366735280
Quantità: 15 disponibili