The following papers are available:
1. KCSE BIOLOGY FOR YEAR 1999
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2. KCSE BIOLOGY FOR YEAR 2000
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3. KCSE BIOLOGY FOR YEAR 2001
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4. KCSE BIOLOGY FOR YEAR 2002
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5. KCSE BIOLOGY FOR YEAR 2003
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6. KCSE BIOLOGY FOR YEAR 2004
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7. KCSE BIOLOGY FOR YEAR 2005
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8. KCSE BIOLOGY FOR YEAR 2006
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9. KCSE BIOLOGY FOR YEAR 2007
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10.KCSE BIOLOGY FOR YEAR 2008
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11.KCSE BIOLOGY FOR YEAR 2009
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