This free course was written by Martin Weller and Nigel Gibson.
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Figure 1: Mcm Science Mediterranean Center of Medical Science in Flickr https://creativecommons.org/licenses/by/2.0
Figure 2: CCAC North Library https://ccac.edu/Library/ in Flickr https://creativecommons.org/ licenses/ by/ 2.0/
Figure 3: drawings (photograph) by Tanja Cappell in Flickr https://www.flickr.com/ photos/ frauhoelle/ 8464661409
Figure 4: Nigel Gibson in Flickr https://creativecommons.org/ licenses/ by-nc-nd/ 2.0/
Figure 5: Stefan Krause in Wikipedia https://creativecommons.org/ licenses/ by-sa/ 3.0/
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