More Microscopical Observations Made by the Same M. Leewenhoeck, and Promised in Numb. 97. of These Tracts; Communicated in His Letters of August 15. 1673 and of April 7. 1674
Journal:
Philosophical Transactions of the Royal Society
Volume:
9
Publisher:
Royal Society
Year:
1674
pages 23-25 letter written 1673-08-15 and 1674-04-07