TY  - JOUR
T1  - On the Sources of the Nitrogen of Vegetation; with Special Reference to the Question Whether Plants Assimilate Free or Uncombined Nitrogen. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 10
SP  - 544
EP  - 557
PY  - 1859/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1859.0109
M3  - doi:10.1098/rspl.1859.0109
AU  - Lawes, J.
AU  - Gilbert, J.
AU  - Pugh, E.
ER  -