TY  - RPRT
TI  - 'Internal' preparations under the GDS.
AU  - T F Watson
AU  - L C Howe
PY  - 1990
DO  - 10.1038/sj.bdj.4807353
UR  - https://pubmed.ncbi.nlm.nih.gov/2261273/
ID  - 2261273
ER  -