1
by Harris, Robert
Project Gutenberg

2
by Harris, Robert, Warner, Robert
Published 2004
Apress

3
by Karmas, Endel
Published 1988
Springer Netherlands
Other Authors: ...Harris, Robert S....

4
Published 1970
American Chemical Society
Other Authors: ...Harris, Robert S....

5
Published 2021
Brill
Other Authors: ...Harris, Robert A....