TY - BOOK AU - Hackett,C. AU - Rose,D.A. TI - A model of the extension and branching of a seminal root of barley, and its use in studying relations between root dimensions. I. The model UR - https://drive.google.com/file/d/1wn1QP4u0USUUqpoD0a7agn2V84vAdOwz/view?usp=drivesdk ER -