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Webb, Eugene

Unobtrusive measures: nonreactive research in the social sciences - 1a ed - New York : Rand McNally College Publishing Company, 1966 - 395 p; 23 cm.

Incluye bibliografía Includes bibliographical references and index

1966

Contents : Approximations to knowledge,phisical traces : erosion and acretion,archives 1: the running record,archives 2: the episodic and private record,simple observationcontrived observation : hidden hardware and control.

ISBN: 528-68694-1

Subjects--Topical Terms:
Familia - Matrimonio

Dewey Class. No.: 301