TY  - RPRT
TI  - Structural changes in spruce and fir needles.
AU  - U Schmitt
AU  - M Ruetze
PY  - 1990
DO  - 10.1016/0269-7491(90)90036-c
UR  - https://pubmed.ncbi.nlm.nih.gov/15092182/
ID  - 15092182
ER  -