A Baedeker / Murray C. Kemp -- On the flatness of the transformation surface / Murray C. Kemp, Chulsoon Khang, and Yasuo Uekawa -- The properties of the set of production possibilities with pure intermediate products / Makoto Tawada -- The shape of the world production frontier / Makoto Tawada -- On the shape of the single-country and world commodity-substitution and factor-substitution surfaces under conditions of joint production / Murray C. Kemp ... [et al.] -- Nonsubstitution over the production-possibility frontier / Richard Manning -- Some implications of variable returns to scale / Horst Herberg and Murray C. Kemp -- Further implications of variable returns to scale / Horst Herberg, Murray C. Kemp, and Makoto Tawada -- The scale effect of public goods on production possibility sets / Richard Manning and John McMillan -- Exhaustible resources and the set of feasible present-value production points / Murray C. Kemp and Makoto Tawada -- Some properties of the per capita production set in the two-sector model of economic growth / Ngo Van Long.