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Search keyword：(Author: #Ryan Patrick J.)
Organized crime : a reference handbook / Patrick J. Ryan
Santa Barbara, Calif. : ABC-CLIO , c1995. - (Contemporary world issues)
Euclidean and non-Euclidean geometry : an analytical approach / Patrick J. Ryan
: hard,: pbk.. - Cambridge : Cambridge University Press , 1986
Tight and taut immersions of manifolds / T.E. Cecil & P.J. Ryan
Boston : Pitman , 1985. - (Research notes in mathematics ; 107)