Hello and welcome to FF! You will need to search the internet "edu" or educational section for research papers in those areas to answer such specific questions. Once in college with access to their library will probably find it lot's easier, since much of what you find are abstracts and the cost to access a few pages paper might be quite high. If interested in our toads might want to read "Frogs of the United States and Canada" by C.Kenneth Dodd Jr. It's a two volume set and considered the foremost on the subject. Good luck!





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