%0 Journal Article %K Adolescent %K Adult %K Aged %K Bacteriological Techniques %K Humans %K leprosy %K Middle Aged %K Mycobacterium leprae %B Actas dermo-sifiliograficas %D 1969 %G spa %N 1 %P 15-26 %T [Bacteriologic study of negative cases of leprosy and of normal persons with a new concentration method]. %V 60 %1 http://www.ncbi.nlm.nih.gov/pubmed/4919200?dopt=Abstract %8 1969 Jan-Feb