By Najma Dharani
By Stokoe, W.J.
By Ontario Science Centre
By Longmore, Murray, Hope, R.A., Longmore, Murray, Wilkinson, Ian, Torok, Estee, Wilkinson, Ian, Torok, Estee, Murray Longmore, R.A. Hope, Ian Wilkinson, Estee Torok
By Collier, Judith, Longmore, Murray, Scally, Peter, etc., Judith Collier, Murray Longmore
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By National Geographic Kids
By Roger Phillips
By Paul Sterry
By G. Hawtin, Colin Webb
By J.M. Duncan, Lesley Torrance
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By The European Garden Flora Editorial Committee (Stanley Smith Horticultural Trust, Cambridge)
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