Olav, Bjerkholt. A dynamic approach to economic theory : Lectures by Ragnar Frisch at Yale University / By Bjerkholt Olav, Qin Duo and Frisch Ragnar. - 1st Ed. - London : Routledge, 2011. - 175p. ; 00 cm. ISBN: 9780415564090 Subjects--Topical Terms: ECONOMICS. Dewey Class. No.: 330.015195 / DYN