How to identify and control black walnut mycosphaerella leaf spot /

Bibliographic Details
Corporate Author:	North Central Forest Experiment Station (Saint Paul, Minn.)
Format:	Government Document Book
Language:	English
Published:	St. Paul, MN : The Station, 1985.
Subjects:	Leaf spots. Walnut > United States.

Description
Item Description:	Shipping list number: 86-303-P.
Physical Description:	6 unnumbered pages : color illustrations ; 23 x 11 cm.