TY - BOOK AU - Perrott, Colin, ed. TI - Ophthalmic Lens Design and Fabrication T2 - Proceedings of SPIE; V. 1529 SN - 9780819406576 (Print) PY - 1991/// CY - Washington, USA PB - SPIE UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1529 ER -