TY  - RPRT
TI  - Letter: Three "reciprocal" approaches.
AU  - A Hindin
AU  - R B Kielich
AU  - C J Gronner
PY  - 1974
DO  - 10.14219/jada.archive.1974.0083
UR  - https://pubmed.ncbi.nlm.nih.gov/4520310/
ID  - 4520310
ER  -