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Heart Valve

270 bytes added, 18:26, 20 November 2019

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:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Valves of the heart, page 53, GCSE Combined Science Trilogy 1, Hodder, AQA '']

:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Valves of the heart; problems with, pages 57, 58, GCSE Combined Science Trilogy 1, Hodder, AQA '']

====Edexcel====

:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Heart valves, page 116, GCSE Combined Science, Pearson Edexcel '']

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