Barnard, C. J.
Asking questions in biology : design, analysis and presentation in practical work / Chris Barnard, Francis Gilbert, Peter McGregor
Harlow Longman Scientific & Technical , 1993
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Tobin, Allan J
Asking about life
Thomson, Brooks/Cole, 2005
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Tobin, Allan J.
Asking about life, vol.3
Harcourt College Publishing, 2001
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Tobin, Allan J.
Biology now for Tobin/Dusheck : asking about life
Brooks/Cole, Thomson, 2005
 Multimedia
Krogh, David
Biology : a guide to the natural world
Pearson, 2009
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