Balestra, Pietro The demand for natural gas in the United States : a dynamic approach for the residential and commercial market / Pietro Balestra - Amsterdam : North Holland Publishing Company , 1967 - 153p. : ill. ; 24 cm. - Contributions to economic analysis . Includes bibliographical references and index. Subjects--Topical Terms: Gas industryUnited States Dewey Class. No.: 665.7 / BAL