TY  - RPRT
TI  - Electron microscopic studies of macromolecules without appositional contrast.
AU  - A K Kleinschmidt
PY  - 1971
DO  - 10.1098/rstb.1971.0045
UR  - https://pubmed.ncbi.nlm.nih.gov/4399202/
ID  - 4399202
ER  -