III · Science
Teaching Maths
Subjects
Mathematics, study and teaching · Mathematics · Study and teaching (Secondary) · Study and teaching (Elementary) · Mathématiques · Étude et enseignement (Secondaire)
Language
ENG




![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](https://covers.openlibrary.org/b/id/10200621-M.jpg)
