Biggs, A. J. (1969). Direct reading two-way metric conversion tables: Including conversions to the international system (SI) units. Pitman.
Citace podle Chicago (17th ed.)Biggs, Alfred John. Direct Reading Two-way Metric Conversion Tables: Including Conversions to the International System (SI) Units. London: Pitman, 1969.
Citace podle MLA (8th ed.)Biggs, Alfred John. Direct Reading Two-way Metric Conversion Tables: Including Conversions to the International System (SI) Units. Pitman, 1969.
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