00420nam a2200157Ia 4500008004100000020001500041082001700056100001700073245003900090260004200129300000700171650002100178650003400199653001400233653001500247170901s1980    xx            000 0 und d  a0192612492  a617.712bI5W  aWilson, John 0aWorld Blindness and its Prevention  aOxfordbOxford University Pressc1980  a93  aMedical sciences  aTechnology (Applied sciences)  aBlindness  aPrevention