On the study and difficulties of mathematics /

First edition, 1831.

Real mathematics, intended mainly for practical engineers, as an aid to the study and comprehension of mathematics,

Mode of access: Internet.

The literary and scientific class book : embracing the leading facts and principles of science, illustrated with engravings, with many difficult words explained at the heads of the lessons, and questions annexed for examination : designed as exercises for the reading and study of the higher classes in common schools : selected from the Rev. John Platts' Literary and scientific class book, and from various other sources and adapted to the wants and condition of youth in the United States / by Levi W. Leonard.

"Select books": p. vii-viii.

The literary and scientific class book, embracing the leading facts and principles of science. Illustrated by engravings, with many difficult words explained at the heads of the lessons, and questions annexed for examination; designed as exercises for the reading and study of the higher classes in common schools. Selected from the rev. John Platts' Literary and scientific class book, and from verious other sources, and adapted to the wants and condition of youth in the United States /

"Select books" : p. vii-viii.