TY  - RPRT
TI  - Light emitting diodes as a plant lighting source
AU  - Bula, R. J.
AU  - Tennessen, D. J.
AU  - Morrow, R. C.
AU  - Tibbitts, T. W.
PY  - 1994
UR  - https://ntrs.nasa.gov/citations/19960011713
ID  - 19960011713
ER  -