Merva, George E. Physical principles of the plant biosystem / George E. Merva. - St. Joseph, Mich., USA : American Society of Agricultural Engineers, c1995. - x, 272 p. : ill. ;Hbk, - ASAE textbook ; . ISBN: 0929355571 Subjects--Topical Terms: Plant ecophysiology.Plant anatomy.Agricultural engineering.Biological systems. LC Class. No.: QK905 / .M47 1995