Catchillar, G. C. (2006). Biology: A simplified approach. National Book Store.
Chicago Style (17th ed.) CitationCatchillar, Gerry C. Biology: A Simplified Approach. Mandaluyong City: National Book Store, 2006.
MLA (9th ed.) CitationCatchillar, Gerry C. Biology: A Simplified Approach. National Book Store, 2006.
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