Author

Harold Joel Conn

2 books found

Cover of Biological Stains; a Handbook on the Nature and Uses of the Dyes Employed in the Biological Laboratory

Biological Stains; a Handbook on the Nature and Uses of the Dyes Employed in the Biological Laboratory

H. J. (Harold Joel) 1886-1975 Conn · First published 2023

Cover of Examination of Some More Productive and Some Less Productive Sections of a Field

Examination of Some More Productive and Some Less Productive Sections of a Field

Thomas Lyttleton Lyon, Harold Joel Conn, James Adrian Bizzell · First published 2023