Plant senescence : its biochemistry and physiology / Thomson, William W., Nothnagel, Eugene A. Huffaker, Ray C. American Society of Plant Physiologists. University of California, Riverside. Plants Plant physiology Plants 581 AME 1987 A032 Or. Proceedings sponsored by the Department of Botany and Plant Sciences, UCR ... [et al.]. Rockville, Md. : American Society of Plant Physiologists, c1987. c1987. Text xiv, 255 p. :