1.

図書
図書
1. The railroad spiral : The theory of the compound transition curve reduced to practical formulæ and rules for application in field work. 6th ed., rev. and enl
By William H. Searles
出版情報: New York : J. Wiley & sons, 1898
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2.

図書
図書
2. Field engineering : a hand-book of the theory and practice of railway surveying, location, and construction, designed for the class-room, field, and office, and containing a large number of useful tables, original and selected. 16th ed
by William H. Searles
出版情報: New York : J. Wiley , London : Chapman & Hall, c1880
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3.

図書
図書
3. Field engineering : a hand-book of the theory and practice of railway surveying, location, and construction, designed for the class-room, field, and office, and containing a large number of useful tables, original and selected. 16th ed
by William H. Searles
出版情報: New York : J. Wiley , London : Chapman & Hall, c1880
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