Author

Frederick William Heyl

2 books found

Placeholder cover for Zygadenine

Zygadenine

S. K. Loy, Frederick William Heyl, Frank E. Hepner · First published 1913

Placeholder cover for The Chemical examination of Death Camas

The Chemical examination of Death Camas

Frederick William Heyl, S. K. Loy · First published 1912