Versalog: Slide Rule Instruction Manual
Chicago: Frederick Post Company, 1963. Hardcover. 8 1/4" X 5 3/4". 119pp. Rubbing, toning, and shelf wear to covers, corners, and edges of gray cloth over boards. Dust-spotting to edges of text block. Previous owner's stamp to front paste-downand front endpaper. Faint foxing to endpapers. Pages are free of marks..... More