Has the earth's crust changed with time? : rare earth abundances in ancient sediments /

"May 1967."

The metallurgy of yttrium and the rare earth metals.

"Materials Central, Contract No. AF33(616)-5905, Project No. 7351."

A. Geology and mineral paragenesis of the Pea Ridge Iron Ore Mine, Washington County, Missouri : origin of the rare-earth-element- and goldbearing breccia pipes /

Includes bibliographical references.

Museum Calonnianum : specification of the various articles which compose the magnificent museum of natural history collected by M. de Calonne in France and lately his property : consisting of an assemblage of the most beautiful and rare subjects in entomology, conchology, ornithology, mineralogy, &c. ... all of which are now exhibiting at Saville House ... previous to the sale thereof.

Reads at end: End of the first part.