Shirirang Purushottam Shukla. (1979). Non-tariff preferences and direct trade measures whitin a global system of trade preferences: measures and possibilities in the context of the Asian experience, with special reference to manufactures and semi-manufactures: A global system of trade preferences among developing countries. [S.l.]: United Nations Confrenece on Trade and Development.

Shirirang Purushottam Shukla. Non-tariff Preferences and Direct Trade Measures Whitin a Global System of Trade Preferences: Measures and Possibilities in the Context of the Asian Experience, With Special Reference to Manufactures and Semi-manufactures: A Global System of Trade Preferences Among Developing Countries. [S.l.]: United Nations Confrenece on Trade and Development, 1979.

Shirirang Purushottam Shukla. Non-tariff Preferences and Direct Trade Measures Whitin a Global System of Trade Preferences: Measures and Possibilities in the Context of the Asian Experience, With Special Reference to Manufactures and Semi-manufactures: A Global System of Trade Preferences Among Developing Countries. [S.l.]: United Nations Confrenece on Trade and Development, 1979.