Description based on: Sept. 1978; title from cover."OTA-P-58."Mode of access: Internet
Cover title."November 1962."Includes bibliographical references.Mode of access: Internet
Description based on: 2o. informe (Mar., 1977); title from cover.Title varies slightly.Mode of acces...
Description based on: Apr. 1, 1982-Sept. 30, 1982; title from cover.Mode of access: Internet
Description based on: 1989; title from cover."OTA-P-58."Vols. for 1990- lack obvious chronological...
Description based on: Feb. 1961-Dec. 1978; title from cover.Each issue cumulates from Feb. 1961; v. ...
Description based on: No. 418 published in 1960; title from cover.Mode of access: Internet
Description based on: Vol. 2, no. 5 (1978); title from cover.Mode of access: Internet
Previously classed: A77.15/71Description based on: Jan.-Dec. 1976; title from cover.Mode of access: ...
Mode of access: Internet.Description based on: Vol. 78 (1992-93); title from cover
Description based on: Vol. 2, no. 3 (Jan.-Feb. 1979); title from caption.Mode of access: Internet
Previously classed: A 77.15:73Publication no. 4213-4261, July-Dec. 1977.Title from cover.Mode of acc...
Description based on: Fiscal year 1980; title from cover.Mode of access: Internet
"The present edition updates the contents through 1978."First published in 1966, revised edition pub...
"January 1983."Cover title: 1961-1982 recreation research publications.Mode of access: Internet
"OTA-PC-104 (revised)"--P. 4 of cover."January 1981"--P. 4 of cover.Includes bibliographical referen...
Cover title."November 1962."Includes bibliographical references.Mode of access: Internet
Description based on: 2o. informe (Mar., 1977); title from cover.Title varies slightly.Mode of acces...
Description based on: Apr. 1, 1982-Sept. 30, 1982; title from cover.Mode of access: Internet
Description based on: 1989; title from cover."OTA-P-58."Vols. for 1990- lack obvious chronological...
Description based on: Feb. 1961-Dec. 1978; title from cover.Each issue cumulates from Feb. 1961; v. ...
Description based on: No. 418 published in 1960; title from cover.Mode of access: Internet
Description based on: Vol. 2, no. 5 (1978); title from cover.Mode of access: Internet
Previously classed: A77.15/71Description based on: Jan.-Dec. 1976; title from cover.Mode of access: ...
Mode of access: Internet.Description based on: Vol. 78 (1992-93); title from cover
Description based on: Vol. 2, no. 3 (Jan.-Feb. 1979); title from caption.Mode of access: Internet
Previously classed: A 77.15:73Publication no. 4213-4261, July-Dec. 1977.Title from cover.Mode of acc...
Description based on: Fiscal year 1980; title from cover.Mode of access: Internet
"The present edition updates the contents through 1978."First published in 1966, revised edition pub...
"January 1983."Cover title: 1961-1982 recreation research publications.Mode of access: Internet
"OTA-PC-104 (revised)"--P. 4 of cover."January 1981"--P. 4 of cover.Includes bibliographical referen...
Cover title."November 1962."Includes bibliographical references.Mode of access: Internet
Description based on: 2o. informe (Mar., 1977); title from cover.Title varies slightly.Mode of acces...
Description based on: Apr. 1, 1982-Sept. 30, 1982; title from cover.Mode of access: Internet