Observations upon a Foetus, and the Parts of Generation of a Sheep. In a Letter to the Royal Society, from Mr. Leeuwenhoek, F. R. S. Translated from the Dutch by Dr. Sprengell, F. R. S.
Journal:
Philosophical Transactions of the Royal Society
Volume:
32
Publisher:
Royal Society
Year:
1722
pages 151-156 letter written 1722-06-13