not specified, 1976 - 1976light microscopy, 1976 - 1976normal light studies, 1976 - 1976normal light studies, 1976 - 1976normal light studies, 1976 - 1976normal light studies, 1976 - 1976normal light studies, 1976 - 1976light microscopy, 1976-06-10 - 1976light microscopy, 1976-06-10 - 1976light microscopy, 1976-06-10 - 1976light microscopy, 1976-06-10 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-07-23 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976light microscopy, 1976-08-12 - 1976