Dreiblatt, David. The economics of heavy earthmoving. Foreword by Seymour Melman. - New York Praeger Publishers 1972. - xvii, 114 p. ills. - Praeger special studies in international economics and development . Bibliography: p. 111-114. LCCN: 77180844 Subjects--Topical Terms: Earthwork--Estimates and costs. LC Class. No.: TA721 / .D7 Dewey Class. No.: 624/.152