Principles and Practice in Ophthalmic AssistingJanice K. Ledford, Al Lens · First published 2018Open the Tome
Nanotechnology for Water and Wastewater TreatmentPiet Lens, Jurate Virkutyte, Veeriah Jegatheesan, S. Al-Abed, Seung-Hyun Kim · First published 2013Open the Tome
Cataract and glaucoma for eyecare paraprofessionalsBrian Duvall, Al Lens, Elliot Werner · First published 1999Open the Tome
Ocular anatomy and physiologyAl Lens, Tammy Langley, Sheila Coyne Nemeth, Carolyn Shea · First published 1999Open the Tome
