by Roger S. Haydock ... [et al.] by Elbert C. Herrick ... [et al.]. by Robert Cook ... [et al.] by Robert U. Ayres ... [et al.]. by Robert M. Johnston ... [et al.]. Robert B. Handfield ... [et al. Robert D.Cook ... [et al. Robert H. Frank ... [et al. by Richard J. Bonnie ... [et al.] = Laura P. Hartman ... [et al.