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|AHR||84.4 (Oct. 1979): 1037||http://links.jstor.org/sici?sici=0002-8762%28197910%2984%3A4%3C1037%3APCIEME%3E2.0.CO%3B2-%23|
|JMH||51.3 (Sep. 1979): 548-551||http://links.jstor.org/sici?sici=0022-2801%28197909%2951%3A3%3C548%3A%3E2.0.CO%3B2-L|
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