by Ward, B.R., McPherson, B., Thomason, J.E.-M.
Published in Public health (London) (1994)

by Thomason, J.E, Plaxico, J.S
Published in Research report P - Oklahoma Agricultural Experiment Station (USA) (01.07.1987)

by Thomason, J.E, Plaxico, J.S
Published in Current farm economics - Agricultural Experiment Station, Division of Agriculture, Oklahoma State University (USA) (01.03.1987)