Uppal, O. [. P. 1. (1975). Practical procedure of classification: (according to C.C. & D.D.C.). Madaan.
Chicago Style (17th ed.) CitationUppal, O.P. [Om Parkash].- 1940. Practical Procedure of Classification: (according to C.C. & D.D.C.). Patiala: Madaan, 1975.
MLA (9th ed.) CitationUppal, O.P. [Om Parkash].- 1940. Practical Procedure of Classification: (according to C.C. & D.D.C.). Madaan, 1975.
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