TY  - RPRT
TI  - Limitations on analysis of small particles with an electron probe: Pollution studies
AU  - Robert H. Heidel
AU  - G. A. Desborough
PY  - 1975
DO  - 10.1016/0013-9327(75)90102-0
UR  - https://pubs.usgs.gov/publication/70010077
ID  - 70010077
ER  -