(Table 1, page 605) Chemistry of concretions from Grand Lake (GL) and Ship Harbour Lake (SH), Nova Scotia and Mosque Lake (ML), Ontario

Studies by optical microscopy, x-ray diffraction, and electron probe techniques of ferromanganese concretions from three Canadian lakes reveal chemical banding of amorphous hydrated iron and manganese oxides. The average ratio of iron to manganese in concretions from these lakes varies from 0.43 to 2.56. The concentrations of cobalt, nickel, copper, and lead are one to two orders of magnitude below those reported for oceanic ferromanganese concretions.

Proceedings of the York Grand Lodge of Mexico, F. & A. M.

Vol. for 1916 issued with title: Annual proceedings.

Potential effects of irrigation practices on crop yields in Grand Valley /

Mode of access: Internet.

Implementation of agricultural salinity control technology in Grand Valley /

Mode of access: Internet.

Evaluation of irrigation methods for salinity control in Grand Valley /

Mode of access: Internet.