English: Frontispiece of the Engineers Hand-book, edited by Willis Carrier while at the Buffalo Forge Company. Edited by the uploader, lightened, converted to greyscale and removed the name of the company that ran along the right side of the image.
Tarix
Mənbə
From the book at archive.org,
Müəllif
Willis Carrier
Lisenziya
Public domainPublic domainfalsefalse
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