Autor: Mark hansen, 22 de titluri

Mark Victor Hansen,Bill Froehlich,Robert T. Bakker

Mark Victor Hansen,Robert G. Allen

Jack Canfield,Mark Victor Hansen,Amy Newmark

Jack Canfield,Mark Victor Hansen,Robert J. Ackerman,Theresa Peluso,Gary Seidler,Peter Vesgo

Jack Canfield,Mark Victor Hansen

Jack Canfield,Mark Victor Hansen,Jennifer Read Hawthorne,Marci Shimoff

Jack Canfield,Mark Victor Hansen

Jack Canfield,Mark Victor Hansen

Jack Canfield,Mark Victor Hansen,Amy Newmark

Sir Peter Gluckman,Mark Hanson