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ZAPOL, W. M.; SNIDER, M. T.; HILL, J. D.; FALLAT, R. J.; BARTLETT, R. H.; EDMUNDS, L. H.; MORRIS, A. H.; PEIRCE, E. C. II; THOMAS, A. N.; PROCTOR, H. J.; DRINKER, P. A.; PRATT, P. C.; BAGNIEWSKI, A.; MILLER, R. G. JR. Author Information
Zapol et al. (Mon,) studied this question.