TY  - RPRT
TI  - Sample preparation techniques.
AU  - W A Baumgartner
AU  - V A Hill
PY  - 1993
DO  - 10.1016/0379-0738(93)90266-d
UR  - https://pubmed.ncbi.nlm.nih.gov/8138215/
ID  - 8138215
ER  -