TY  - BOOK
AU  - PIERIK, R L M
TI  - Integrating photochemical light measurement: An ecological study iin the middacnten woodland in Netherland
U1  - 577.344:581.5(492) 
PY  - 1965///
CY  - Netherland
PB  - Agricultural University
KW  - Photochemical light measurement
ER  -