Recovery of coliforms by the MPN and MF techniques using a 2n - factorial experimental design /

Bibliography: p. 37-39.

Street & coding guide : Region 2 (formerly Chicago Area Zone)

Prepared by Nancy Moses.

Coding manual, 1959.

Mode of access: Internet.

Harmonized commodity description and coding system : explanatory notes /

Mode of access: Internet.

Principles of coding, filtering, and information theory.

Includes bibliography.