That this work-really much more a vast repertory of liturgical science than the mere textbook it purports to be-has been widely praised by European liturgists, among them Jungmann, is hardly matter for surprise. Canon, Martimort, for the realization of this long-cherished project of the Centre de Pastorale liturgiue, has secured the collaboration, each within his respective field of specialization, of s truly remarkable team of scholars.