Melvin L. Silberman and Elaine Biech, "Active Training: A Handbook of Techniques, Designs, Case Examples and Tips, 4th edition" English | ISBN: 1118972015 | 2015 | 448 pages | True PDF | 3 MB
Active Training: A Handbook of Techniques, Designs, Case Examples, and Tips by Melvin L. Silberman and Carol Auerbach English | 2006-04-14 | ISBN: 0787976237 | 380 pages | PDF | 1,7 MB