Riggan Matthew : Reason & rigor : how conceptual frameworks guide research / Sharon M. Ravitch, Matthew Riggan.
Rigge Ambrose 1634 1704 : To the whole flock of God everywhere, the church of the first-born written in heaven, and to every member thereof, whose redeemer is the holy one of Israel : grace, mercy, peace, truth and love from the God of peace and love be multiplied amongst you, and to you all, amen.
Rigge Ambrose 1639 1705 : The good old way and truth [electronic resource] : which the ancient Christians many ages and generations ago witnessed unto in the world from age to age : even from the dayes of Christ unto this very time, wherein the same doctrine, life, and practice is witnessed unto by us who are in contempt called Quakers, through many tribulations ... / written by ... Ambros Rigge.
Riggott John Michael : The early diagnosis of cancer of the cervix : a symposium held at the University of Hull on the 20th March 1970 as part of the 11th Annual General Meeting of the British Association for Cancer Research / edited by J.M. Riggott.
Riggs Robert : The string quartets of Haydn, Mozart and Beethoven : studies of the autograph manuscripts : a conference at Isham Memorial Library, March 15-17, 1979 / edited by Christoph Wolff ; Robert Riggs, assistant editor.