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Teratology|May 1, 1998
Normal and abnormal embryonic development of the anorectum in human embryosR A Nievelstein, J F van der Werff, F J Verbeek, et al.
Teratology|October 1, 1988
Retinoic acid induction of featherlike structures from reticulate scalesC J Fisher, L W Knapp, R H Sawyer
Teratology|November 1, 1988
"Rates" of birth defectsJ Schulman, G Shaw, S Selvin
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