Magwood, Stanley G. A.2009-03-232009-03-2319641964Source: Dissertation Abstracts International, Volume: 62-13, Section: A.http://hdl.handle.net/10393/7248http://dx.doi.org/10.20381/ruor-11683Biology, General.A study of the seasonal variation in the thyroid activity in Rana catesbeiana.Thesis