[by] Richard C. Dove [and] Paul H. Adams. by Richard H. Crowell and Ralph H. Fox. [by] Richard H. Wiley and Paul Wiley. by Richard J. Block and Diana Bolling. by Richard E. Bellman and Stuart E. Dreyfus. by Richard C. Tolman .. by Richard B. Setlow and Ernest C. Pollard. by C. S. Chettoe and Haddon C. Adams. by Richard E. Speidel, Steve H. Nickles.