Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 258
240 VAN NOSTRAND'S ENGINEERING MAGAZINE. … Beginning at A' we take the reading R, the Paris Correspondent of the " Times," then elevate the line of sight to P, taking "that themacadamization here is excellent, the reading R'. Level back to A, proceed- that the carriage ways where that system is adopted present a compact, well-bound ing as…
Engineering
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