00430nam a2200133Ia 4500008004100000020001700041040001700058082002200075100002400097245005500121260004100176300001000217650006900227190328s9999||||xx |||||||||||||| ||und||  a0-04-33021-4  aNITILcNITIL  221sta338.9bY81E  aYoungson, A J (Ed.) 0aEconomic development in the long runcA J Youngson  aLondonbGeorge Allen and Unwinc1972  a256p.  aEconomic development; Diffusion of innovations; Economic history