"John C. Clark & Son." . . . "Pennsylvania civil service a digest of the general statutes of the commonwealth of Pennsylvania expressly relating to public officers, state, county, city, township, and borough : with statutory forms"@en . . . "Pennsylvania civil service. A digest of the general statutes of the commonwealth of Pennsylvania expressly relating to public officers, state, county, city, township, and borough; with statutory forms" . . . . . . . . . . . . . . "Pennsylvania" . .