4 books in series

30-Second

30-Second is a 4-book series first released in 2009 with contributions by François Fressin, Mary-Jo Waeber, and 5 others.

PopularFirst

2009 • 1 Reader 3

30-Second Brain

2012 • 2 Readers • 160 pages 4

30-Second Philosophies

2010 • 1 Reader • 160 pages

30-Second Theories

2010 • 160 pages