00427    a2200145   4500020001500000082001600015100002100031245008700052250001200139260002800151300001900179650003700198650001300235650003300248  a9241544783  a616.39bSOM  aSommer,  Alfred   aVitamin A deficiency and its consequences ba field guide to detection and control  a3rd ed.  aGenevabWHOc1995g1995  avii,69p.c24cm  aNutrition and metabolic diseases  aDiseases  aDiseases of digestive system