An extended concept of "model"
By: E.S. Quade.
Contributors: Rand Corporation.
Series: Paper / Rand -- P-4427; P (Rand Corporation) -- P-4427.
Publisher: Rand Corp.
Published: 1970
Place of publication: [Santa Monica, Calif
Language: eng
Number of pages: 13
Subjects: Operations research.; Delphi method.
Notes: Cover title.

"July 1970."

"P-4427."

Includes bibliographical references (p. 13).