Georg Joos ; with the collaboration of Ira M. Freeman. Hem C. Jain, with the collaboration of Genevi醗ve Laloux Jain. by Georg Joos, with the collaboration of Ira M. Freeman. by Georg Joos ; with the collaboration of IRA M. Freeman. Andr鈋 Weil, with the collaboration of Maxwell Rosenlicht. compiled and edited by C. Marsden, with the collaboration of Seymour Mann.