http://userpages.umbc.edu/~earickso/Profiles_international/haggett.html

http://www.ggy.bris.ac.uk/personal/PeterHaggett/haggett_biog.html

http://todayinsci.com/H/Haggett_Peter/HaggettPeter-Quotations.htm

http://worldcat.org/identities/lccn-n79-150313

http://www.ggy.bris.ac.uk/personal/PeterHaggett/haggett_cv.html

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