by L. C. B. Gower ... [et al.] by J.E. Singley ... [et al.] by S.S. Penner ... [et al.] Paul S. Boyer ... [et al.] by B. P. Lim ... [et al.] by D.C. Larsen ... [et al.] by D.S. Henzel ... [et al.] Mikell P. Groover ... [et al.] by C. Bliem ... [et al.] by D.G. Ackerman ... [et al.]