TY - BOOK AU - Nielsen, Hans, ed. TI - Environment and Pollution Measurement Sensors and Systems T2 - Proceedings of SPIE; V. 1269 SN - 9780819403162 (Print) PY - 1990/// CY - Washington, USA PB - SPIE UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1269 ER -