Изготовление электронных копий любых изданий

Assessment of crop loss from air pollutants Proc. of an Intern. conf., Raleigh, North Carolina, USA, Oct. 25-29, 1987 Organized by the Research management comm. of the Nat. crop loss assessment network (NCLAN) for the US. Environmental protection agency Environmental lab. Corvallis, Oregon, USA ; Ed. by Walter W. Heck et al.