TY  - RPRT
TI  - SEROLOGIC STRAIN DIFFERENTIATION IN TRACHOMA.
AU  - R L NICHOLS
AU  - D E MCCOMB
PY  - 1964
DO  - 10.1084/jem.120.4.639
UR  - https://pubmed.ncbi.nlm.nih.gov/14217913/
ID  - 14217913
ER  -