A Specimen of Some Observations Made by a Microscope, Contrived by M. Leewenhoeck in Holland, Lately Communicated by Dr. Regnerus de Graaf
Journal:
Philosophical Transactions of the Royal Society
Volume:
8:94
Publisher:
Royal Society
Year:
1673
letter dated April 28, 1673
published May 19, 1673 in Philosophical Transactions number 94, pages 6037-6038