Fredericksen, T S Physiology, morphology, and ozone uptake of leaves of black cherry seedlings, saplings, and canopy trees. [electronic resource] - Environmental pollution (Barking, Essex : 1987) 1995 - 273-83 p. digital Publication Type: Journal Article ISSN: 0269-7491 Standard No.: 10.1016/0269-7491(94)00077-q doi