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|Material Type:||Government publication, State or province government publication|
|All Authors / Contributors:||
M C Hallberg; B L Flinchbaugh; Pennsylvania State University. Institute for Research on Land and Water Resources.
"U. Ed. 9-113."
|Description:||42 leaves : map, forms ; 28 cm.|
|Series Title:||Research publication (Pennsylvania State University. Institute for Research on Land and Water Resources), no. 57.|
|Responsibility:||by M.C. Hallberg and B.L. Flinchbaugh.|