TY  - JOUR
T1  - The Existence of Daily Growth-Rings in the Cell Wall of Cotton Hairs
JF  - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934)
VL  - 90
IS  - 634
SP  - 542
EP  - 555
PY  - 1919/07/01/
UR  - http://dx.doi.org/10.1098/rspb.1919.0012
M3  - doi:10.1098/rspb.1919.0012
AU  - Balls, W.
ER  -