Characteristics, interpretations and uses of Pennsylvania soils
Subtitle: Armstrong County
By: R.L. Cunningham ... [et al.].
Series: Progress report / Pennsylvania State University, School of Agriculture, Agricultural Experiment Station -- 316; Progress report (Pennsylvania State University. Agricultural Experiment Station) -- no. 316
Publisher: Pennsylvania State University, College of Agriculture, Agricultural Experiment Station
Published: 1971
Place of publication: University Park, Pa
Language: eng
Number of pages: 47
Subjects: Soils; Analysis
Notes: Cover title.

Bibliography: p.46.