11 Who propounded the Purchasing Power Parity Theory?

Gustav Cassel

12 In economics who initiated and developed the input-output analysis?

W. Leontief

13 Who authored ‘‘An Introduction to Positive Economics’’

G. Lipsey

14 Whose work is ‘‘Mathematical Analysis for Economists’’?

G. D. Alien

15 ‘‘The Strategy of Economics Development’’ was authored by

O. Hirshman

16 Who is the author of ‘‘Problems of Capital Formation in Underdeveloped Countries’’?

Nurkse

17  Who wrote ‘‘The Making of Index Numbers’’?

Irving Fisher

18 Who developed the ‘‘Keynesian Theory of Distribution’’?

Kaldor

19 Who propounded the ‘‘Liquidity Preference Theory of Interest’’?

M. Keynes

20 Who propounded the ‘‘Time Preference Theory of Interest’’?

Bohm Bawerk