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181Publicerad 1974Ämnen “...Oil pollution of rivers, harbors, etc....”
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182Publicerad 1974Ämnen “...Oil pollution of rivers, harbors, etc....”
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183
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184Publicerad 1974Ämnen “...Thermal pollution of rivers, lakes, etc. Environmental aspects Congresses....”
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185
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186
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187
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188
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189
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190
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191
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192Publicerad 1991Ämnen “...Sewage disposal in rivers, lakes, etc....”
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193av Oxenham, Stephen, 1953-Ämnen “...Rivers New Zealand South Wairarapa District....”
Publicerad 1993
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194Publicerad 2014ÄmnenBok
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195av Langham, Ian, 1942-Ämnen “...Rivers, W. H. R. (William Halse Rivers), 1864-1922....”
Publicerad 1981
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196
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197
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198
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199Publicerad 1977Ämnen “...Wild and scenic rivers New Zealand....”
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200Publicerad 1972Ämnen “...Rivers Congresses....”
Konferenspublikation Bok