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NCERT, . (2006). व्यवसाय अध्ययन :Business studies (Class Xl). New Delhi: NCERT.
NCERT, . 2006. व्यवसाय अध्ययन :Business studies (Class Xl). New Delhi: NCERT.
NCERT, . व्यवसाय अध्ययन :Business studies (Class Xl). New Delhi: NCERT. 2006.