TY  - RPRT
TI  - Sulphonamide-resistant meningococcus.
AU  - J Calder
PY  - 1971
DO  - 10.1016/s0140-6736(71)92605-5
UR  - https://pubmed.ncbi.nlm.nih.gov/4104802/
ID  - 4104802
ER  -