TY  - RPRT
TI  - Letter: Supraregional assay service.
AU  - R P Ekins
PY  - 1976
DO  - 10.1016/s0140-6736(76)93110-x
UR  - https://pubmed.ncbi.nlm.nih.gov/56552/
ID  - 56552
ER  -