David W. Johnson
Cooperative Learning Institute 5028 Halifax Ave. S. Edina, MN 55424 (952) 831-7060, FAX (952) 831-9332 dwj@visi.com
Roger T. Johnson
Cooperative Learning Institute 5028 Halifax Ave. S. Edina, MN 55424 (651) 633-7858, FAX (952) 831-9332 johns009@umn.edu
Linda M. Johnson
Interaction Book Company
5028 Halifax Ave. South
Edina, MN 55424
(952) 831-9500, FAX (952) 831-9332
lmj@visi.com