- The real number system, by Grace E Bates, 1960
- Cambridge Mathematics Direct 2 Numbers and the Number System Teacher's Book by Jeanette Mumford, Joanne Woodward, 2002-02-28
- Number systems;: An intuitive approach by Rex L Hutton, 1971
- Cambridge Mathematics Direct 3 Numbers and the Number System Teacher's handbook
- Number Theory and Dynamical Systems (London Mathematical Society Lecture Note Series)
- Hydrous Molybdates of Groups V A to VI B Metals (System-Numbers 18 to 52) (Gmelin Handbook of Inorganic and Organometallic Chemistry - 8th edition / Mo. Molybdän. Molybdenum (System-Nr. 53))
- Finite Precision Number Systems and Arithmetic (Encyclopedia of Mathematics and its Applications) by Peter Kornerup, David W. Matula, 2010-11-30
- Building Number Sense: The Number System (Investigations in Number, Data and Space) by Marlene Kliman, Susan Jo Russell, 2004
- Five Women Build a Number System: (Mathematics, Learning, and Cognition) by Robert Speiser, Charles Walter, 2000-01-13
- The number-system of algebra treated theoretically and historically by Henry B. 1858-1928 Fine, 2010-09-07
- When There Were Dinosaurs: Using Expanded Notation to Represent Numbers in the Millions (Math for the Real World) by Orli Zuravicky, 2004-01
- Man and Number (Dover Science Books) by Donald Smeltzer, 2003-10-17
- One to Nine: The Inner Life of Numbers by Andrew Hodges, 2009-11-02
- Continuous System Simulation by François E. Cellier, Ernesto Kofman, 2010-11-02
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