A natural approach to mathematics
Subtitle: (in 6 parts). Part 4.
By: by H. W. Clayton andD. N. Straker :
Contributors: Straker, Denys Noel.
Publisher: Pergamon
Published: 1969
Place of publication: Oxford
Language: eng
Number of pages: 248
Subjects: Arithmetic.
Notes: Originally published (B67-8463) 1967.