The Science Beneath the SurfaceDon Duggan-Haas, Warren D. Allmon, Robert M. Ross · First published 2013Open the Tome
Confirmation (Filled with the Holy Spirit, they proclaimed the Lord Jesus)Robert D. Duggan · First published 2006Open the Tome
The order of Christian initiation of adults and the future of catecheticsRobert D. Duggan · First published 1990Open the Tome
Conversion in the Ordo initiationis Christianae adultorumRobert D. Duggan · First published 1980Open the Tome
