Kavanagh, B. (2009). Surveying principles and applications. Peason Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Kavanagh, Barry. Surveying Principles and Applications. Peason Prentice Hall, 2009.
Lua MLA (8ú heag.)Kavanagh, Barry. Surveying Principles and Applications. Peason Prentice Hall, 2009.
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