An Introductory Course in Science for Colleges ... By F.C. Jean, Ezra Clarence Harrah and Fred Louis Herman ... With the Editorial Collaboration of Samuel Ralph Powers
Powers General Chemistry Test
Powers General Chemistry Test
Exploring our world
Using our world
Man's Control of His Environment
Our World and Science
Man and the nature of his physical universe
Exploring Our World
Workbook in Physics
The World Around Us
Our World Changes
Our world changes
Workbook in Physics
A Survey of Science for Junior High Schools ... By S.R. Powers ... Elsie Flint Neuner ... and Herbert Bascom Bruner
Our World and Science
Adventuring in Science
Adventuring in Science. By S. R. Powers ... Elsie Flint Neuner ... Herbert Bascom Bruner ... and John Hodgdon Bradley