TY  - RPRT
TI  - The evolution of lignin - Experiments and observations.
AU  - Siegel, S. M.
AU  - Carrol, P.
AU  - Umeno, I.
AU  - Corn, C.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19730044847
ID  - 19730044847
ER  -