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The non-directive approach in group and community work / T.R. Batten ; with the collab. of Madge Batten.
- Oxford University Press,
- 1971.
- London :
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World agriculture : an international survey : a report / by a Study group of members of the Royal institute of international affairs.
- Oxford University Press,
- 1932.
- London :
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Medical surveys and clinical trials : some methods and applications of group research in medicine / edited by L.J. Witts.
- 610.72 M4892s
- Oxford University Press,
- 1959. ©1959
- London :