TY  - RPRT
TI  - Obsidian source identification by fission track analysis.
AU  - S A Durrani
AU  - H A Khan
AU  - M Taj
AU  - C Renfrew
PY  - 1971
DO  - 10.1038/233242a0
UR  - https://pubmed.ncbi.nlm.nih.gov/16063313/
ID  - 16063313
ER  -