"Eye Infections prevention & control." . . "Eye infections prevention & control." . "Präventivmedizin." . . "Cegueira." . . "Blindheit." . . "Eye Diseases prevention & control." . . "Primary Health Care organization & administration." . . "Organizzazione mondiale della sanità." . . "Slepota." . . "Ceguera Prevención y control." . . "Cécité Prévention." . . "Ceguera Países en desarrollo Prevensión." . . "Blindness Developing countries Prevention." . . "Blindness prevention & control." . . "Blindness." . . "Gesundheitsförderung." . . "Primary Health Care." . . "Primary health care." . "Health Policy." . . . . "Developing countries" . . "Organisation mondiale de la santé." . . "cécité [document]" . . "Blindness Prevention" . . "Blindness Prevention Planning." . . "Blindness Prevention Planning" . "Ojo Cuidado e higiene Países en desarrollo." . . "National Health Programs organization & administration." . . "Eye Care and hygiene Developing countries." . . "Blindheid." . . "Strategies For the Prevention of Blindness in National Programmes - a Primary Health Care Approach" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Strategies for the prevention of blindness in national programmes : a primary health care approach"@en . . . "Strategies for the prevention of blindness in national programmes : a primary health care approach" . "Strategies for the prevention of blindness in national programmes a primary health care approach" . . . . . . . . . . . . . . . . . . . . . . "Preventieve gezondheidszorg." . . "Ceguera Prevención Planeación." . . "Entwicklungsländer." . . "Eye Care and hygiene" . . "World Health Organization" . . "World Health Organization." . "National Health Programs." . . "National health programs." .