/ 1968

SOCIAL COMMUNICATION: THE ETHOLOGICAL APPROACH

/ 1968

IN DEFENCE OF THE WRITER

/ 1968

NEW FOLK SONGS

/ 1968

PARADISE AND UTOPIA: MYTHICAL GEOGRAPHY AND ESCHATOLOGY

/ 1968

CULTURAL TOURISM IN FRANCE

/ 1968

CULTURAL HERITAGE AND TOURISM

/ 1968

TOURISM – A LEISURE ACTIVITY

/ 1968

TOWARDS OPEN HOLIDAYS!

/ 1968

DRIFTING THROUGH AMSTERDAM