An Extract of a Letter, Written at Paris Novemb. 7. 1671. (St.n.) by Monsieur Christian Hugens de Zulichem to the Publisher; Concerning the Observations of Saturn Mentioned in the Next Foregoing Discourse: English't Out of French

H. de Zulichem
1671 Philosophical Transactions of the Royal Society of London  
doi:10.1098/rstl.1671.0059 fatcat:vjnvhcjrnbgnlah6qiugtvre5i