013469239X / 9780134692395 Cosmic Perspective, The: Stars and Galaxies & Lecture- Tutorials for Introductory Astronomy, 8/e
Package consists of:
0134073827 / 9780134073828 Cosmic Perspective, The: Stars and Galaxies, 8/e
0321820460 / 9780321820464 Lecture- Tutorials for Introductory Astronomy, 3/e