en

The elements of astronomy

Charles A. Young · 1889

464 pages · ~12h read

science

en

Uranography

Charles A. Young · 1890

42 pages · ~1h read

science

en

Lessons In Astronomy

Charles A. Young · 1893

376 pages · ~9h read

science

en

A text-book of general astronomy for colleges and scientific schools

Charles A. Young · 1889

630 pages · ~16h read

science