John L. Safko

• Classical Mechanics
• Klassische Mechanik
• Self-Paced Study Guide and Laboratory Exercises in Astronomy
• Study guide
• Astronomy Study Guide and Exercises for Distance Education
• Classical Mechanics (3rd Edition)
• Mind-Boggling Problems of Philosophy
• Self-Paced Study Guide and Laboratory Exercise in Astronomy
• Self-Paced Study Guide and Laboratory Exercises in Astronomy and Discovering Astronomy USC Version
• Study Guide and Lab Excersises in Astronomy
• Study Materials for Project Universe