TY - BOOK AU - Shell,Karl TI - Essays on the theory of optimal economic growth AV - HD82 .E75 U1 - 338 PY - 1967///] CY - Cambridge, Mass. PB - M.I.T. Press KW - Economic development KW - Local KW - Economics KW - Mathematical models N1 - Fifteen essays, based upon material that was presented during 1965-66 at an M.I.T. seminar; Includes bibliographies ER -