TY  - RPRT
TI  - Letter: Macromolecular structures for undergraduates.
AU  - M J Smith
AU  - L Roberts
PY  - 1974
DO  - 10.1038/248813b0
UR  - https://pubmed.ncbi.nlm.nih.gov/4835557/
ID  - 4835557
ER  -