1. Parasitology: indexing instructions Author(s): Charen, Thelma. Publication: [Bethesda, Md.] : National Library of Medicine, Index Section, 1969 Subject(s): Abstracting and Indexing as TopicParasitology
2. Immunology: MEDLARS indexing instructions Author(s): Charen, Thelma. Publication: [Bethesda, Md.] : National Library of Medicine, Indexing Section, 1973 [i. e. 1972] Subject(s): MEDLARSAbstracting and Indexing as TopicAllergy and Immunology
