TY - BOOK AU - Shoemaker, Charles M., ed. TI - Unmanned Systems Technology XXI T2 - Proceedings of SPIE; V. 11021 SN - 9781510627079 (Print) PY - 2019/// CY - Washington, USA PB - SPIE UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11021 ER -