Joel E. Ross ; with contributions by Susan Perry. Paul E. Green, with contributions by J. Douglas Carroll. James A. Anderson ; with contributions by Tom Head. D. Zissos ; with contributions by J.C. Bathory. D. Zissos, with contributions by J. C. Bathory. Arthur H. Nilson ; with contributions by David Darwin. Stephen Marshak ; with contributions by Donald Prothero. William P. Ziemer ; with contributions by Monica Torres. by Donald E. Breyer, with contributions by John A. Ank. Robert Q. Riley ; with contributions by Dr. Wonshik Chee.