Application of a human tumor colony forming assay to new drug screening.

Mode of access: Internet.

Routine testing of samples for radioactivity in mills and assay offices in the United States : a progress report /

"August 1953."

Illustrated history of the United States mint with short historical sketches and illustrations of the branch mints and assay offices, and a complete description of American coinage ...

Mode of access: Internet.

Chaffers' Handbook to hall marks on gold & silver plate, with revised tables of the annual date letters employed in the assay offices of England, Scotland and Ireland.

"First issued in 1897."

Ionization chamber assay of radioactive gases /

Contract No. W-7405-eng-48.

The vitamin directory; a complete, authoritative description and trade listing of all vitamin materials, assay methods and instruments, experimental animals, reference materials and reagents.

Cover-title.

A philosophical and practical essay on the gold and silver mines of Mexico and Peru : containing the nature of the ore, and the manner of working the mines, the qualities and use of quicksilver, the cleansing and refining these metals : with many useful observations concerning the assay of metals, the manner of conveying them to Europe, and remarks on the gold mines in Hungary, and those of Asia and Africa /

No Spanish ed. in: NUC pre-1956, BLC, Sabin, Palau y Dulcet (2nd ed.).

A tissue enzyme assay for chlorinated hydrocarbon insecticides.

"Project 16030 ELZ; Program element 1BA027."