Bruhns. (1970). A New manual of logarithms to seven palces of decimals. d. van nostrand company, inc.
Lua i Stíl Chicago (17ú heag.)Bruhns. A New Manual of Logarithms to Seven Palces of Decimals. London: d. van nostrand company, inc, 1970.
Lua MLA (9ú heag.)Bruhns. A New Manual of Logarithms to Seven Palces of Decimals. d. van nostrand company, inc, 1970.
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