Shadows of Forgotten Ancestors: Carl Sagan, Ann Druyan: 9780345384720: Amazon.com: Books
Regression: Past-life Therapy for Here and Now Freedom: Samuel Sagan: 9780958670005: Amazon.com: Books
Amazon.com: The Fragile Balance of Terror: Deterrence in the New Nuclear Age (Cornell Studies in Security Affairs): 9781501767012: Narang, Vipin, Sagan, Scott D.: Books