Irma S. Wachtel

A punched card index for nuclear data

Irma S. Wachtel, 1952 .

The logical structure of coordinate indexing

Irma S. Wachtel, Mortimer Taube, 1953 .

Unit terms in coordinate indexing

Irma S. Wachtel, Mortimer Taube, C. D. Gull, 1952 .