The councils of the church from the council of Jerusalem A.D. 51, to the Council of Constantinople A.D. 381, chiefly as to their constitution, but also as to their objects and history.

Mode of access: Internet.

The Ansayrii, (or Assassins,) with travels in the further East, in 1850-51. Including a visit to Ninevah.

Mode of access: Internet.

Peregrinación de Alpha : por las provincias del norte de la Nueva Granada, en 1850-51 /

Mode of access: Internet.

Radio interferometry techniques for geodesy : proceedings of a conference sponsored by the National Aeronautics and Space Administration and the American Geophysical Union in cooperation with Special Study Group 2.51 of the International Association of Geodesy and held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, and the Northeast Radio Observatory Corporation Haystack Observatory, Westford, Massachusetts, June 19-21, 1979.

Includes bibliographical references.