Sex, the Illustrated History Through Time, Religion, and Culture: Volume Iii; Sex in the Modern World; Europe from the 17Th Century to the 21St Century, Colonial North and South America to the 21St Century, Slavery and Homosexual Histories, and Bisexuality Gregg John Heftet / 2018 / Engelsk
Making Shorthand Teaching Effective - Scholar's Choice Edition Robert, Gregg John Heftet / 2015 / Engelsk
Ones and Zeros Understanding Boolean Algebra, Digital Circuits, and the Logic of Sets Gregg John R. Heftet / 1998 / Engelsk
