TY  - BOOK
AU  - Butler, James, ed.
TI  - Earth Observing Systems XXI
T2  - Proceedings of SPIE; V. 9972
SN  - 9781510603356 (Print)
PY  - 2016///
CY  - Washington, USA
PB  - SPIE
UR  - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9972
ER  -