Introducing percentages
By: Eon Harper, Joyce Harris, Richard Strong ; cover and drawings by Scoular Anderson.
Contributors: Harris, Joyce, 1924-; Strong, Richard.
Series: Maths minipacks -- 9
Publisher: Addison-Wesley
Published: 1977
Place of publication: London
Language: eng
Number of pages: 17
Subjects: Percentage -- Problems, exercises, etc.
Notes: With answers to the coloured questions.

One answer sheet, with answers to all the questions, as insert with each pack of 5 books.