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1Опубликовано 1968“...Intermediate Technology Development Group...”
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3по Boyd, J. E. L. (John E. L.)“...Intermediate Technology Development Group...”
Опубликовано 1976
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9Опубликовано 1985“...Intermediate Technology Development Group...”
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10Опубликовано 1976“...Intermediate Technology Development Group...”
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11Опубликовано 1970“...Intermediate Technology Development Group...”
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17Опубликовано 1977“...Intermediate Technology Development Group. Water Panel...”
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18Опубликовано 1983“...Intermediate Technology Development Group...”
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20Материалы конференции Опубликовано 1991“...Intermediate Technology Development Group...”