edited by Ruddar Datt

Deep & Deep Puplications c2003

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Ruddar Datt

Indian Society of Labour Economics, Institute for Human Development [&] Manohar 2003

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Ruddar Datt

Bookwell 2001

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edited by Ruddar Datt

Deep & Deep Publications c2001

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by Ruddar Datt and K.P.M. Sundharam

S. Chand & Co. 2000 54th ed

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Ruddar Datt and K. P. M. Sundharam

S Chand & Company 1999 40th revised edition

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by Ruddar Datt and K. P. M. Sundharam

S Chand & Company 1998 Thirty-Eighth Revised Edition

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edited by Ruddar Datt

Vikas 1997

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Ruddar Datt

S. Chand & Company 1997 lst ed.

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edited by Ruddar Datt

Pragati Publications 1993

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edited by Ruddar Datt

S. Chand & Co. 1987

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by Ruddar Datt & K.P.M. Sundharam

S. Chand 1976 13th rev. ed.

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by Ruddar Datt and K.P.M. Sundharam

S. Chand 1972 8th rev. ed

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by Ruddar Datt and K.P.M. Sundharam

Niraj Prakashan 1971 7th rev. ed

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by Ruddar Datt and K.P.M. Sundharam

Niraj Prakashan 1968 4th rev. ed

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