Economics - Lipsey, Richard 1928-; Steiner, Peter O. 1922-2010 (Harper & Row, 1969)
Erg. bilden: Lipsey, Richard G.: Instructor's manual to accompany Lipsey & Steiner second edition "Economics", 1969 und: Forbush,Dascomb: Study guide to accompany Lipsey & Steiner second edition "Economics", 1969