Sonia A. Hirt

By John M. Levy, Sonia A. Hirt, Casey J. Dawkins

Edited By Sonia Hirt, Diane Zahm

By Steven Janosik, Diane Cooper, Sue Saunders, Joan Hirt

Edited By Ashley Tull, Joan B. Hirt, Sue Saunders

By Steven M. Janosik, Don G. Creamer, Joan B. Hirt, Roger B. Winston, Sue A. Saunders, Diane L. Cooper

By V. Ruttan, C. Thirtle

Edited By Robert P Hirt, David S. Horner

Edited By Bonnie Henderson, Sonia Yoo

By William L. Baldwin, John T. Scott, Colin F. Thirtle, Vernon W. Ruttan

By Colin G Thirtle

Edited By J. R. McWhirter

Edited By Paula Brito, Sonia Dias