TY  - RPRT
TI  - Zonal centrifugation.
AU  - D Freifelder
PY  - 1973
DO  - 10.1016/s0076-6879(73)27010-6
UR  - https://pubmed.ncbi.nlm.nih.gov/4773283/
ID  - 4773283
ER  -