Global ETD Search

About
The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

1	On the mechanism of ammonium ion uptake by maize roots Becking, Jan Hendrik, January 1956 (has links) Thesis--Leiden. / Vita. Bibliography: p. 75-79. Zea mays. Plants Ammonium salts.
2	On the mechanism of ammonium ion uptake by maize roots Becking, Jan Hendrik, January 1956 (has links) Thesis--Leiden. / Vita. Bibliography: p. 75-79. Zea mays. Plants Ammonium salts.