Author

Richard L Ober

2 books found

Cover of Systematic observation of teaching

Systematic observation of teaching

Richard L. Ober · First published 1971

Placeholder cover for A study of the reaction of copper II sulfide with metals in the presence of hydrochloric acid

A study of the reaction of copper II sulfide with metals in the presence of hydrochloric acid

Richard L Ober · First published 1963