Biblio
“The Polar Cap Of Mars”. Astronomy And Astrophysics. Astronomy And Astrophysics.
. 1894. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
. 1893.
Douglass, AE_Swift's Comet 1892_1893.pdf (157.28 KB)
![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“Indications Of A Rainy Period In Southern Peru”. Science. Science.
. 1892. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“La Inundacion De 1868”. El Cosmos. El Cosmos.
. 1892. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“The Lowell Observatory And Its Work”. Popular Astronomy. Popular Astronomy.
. 1885. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“The Crescentic Dunes Of Peru”. Appalachia XII (No.1). Appalachia.
. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“Dendrochronology And Studies In Cyclics”. University Of Pennsylvania Bicentennial Conference Proceedings. University Of Pennsylvania Bicentennial Conference Proceedings.
. ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
“Dendrochronology And Studies In Cyclics”. University Of Pennsylvania Bicentennial Conference. University Of Pennsylvania Bicentennial Conference.
.