Development of a strategy for sampling tree rings /

Mode of access: Internet.

Rings of operators.

"Prepared with the assistance of a grant from the Research Corporation."

Durability tests on pyrex raschig rings /

"U.S. Atomic Energy Commission Contract AT(29-1)-1106."

Manual for the use of borosilicate Raschig rings as a fixed nuclear poison /

"U.S. Atomic Energy Commission Contract AT(29-1)-1106."

Theory of local rings; lecture notes, Summer Quarter, 1958, The University of Chicago.

Cover title.

Rings for the finger : from the earliest known times to the present, with full descriptions of the origin, early making, materials, the archaeology, history, for affection, for love, for engagement, for wedding, commemorative, mourning, etc. /

Facsimile of 4-page handwritten letter to the author signed by Admiral Robert E. Peary bound in.