TY  - JOUR
T1  - The Stomatograph
JF  - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934)
VL  - 85
IS  - 576
SP  - 33
EP  - 44
PY  - 1912/04/10/
UR  - http://dx.doi.org/10.1098/rspb.1912.0022
M3  - doi:10.1098/rspb.1912.0022
AU  - Balls, W.
ER  -