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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (478.946 KB) | DOI: 10.14238/pi33.1-2.1993.20-3
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.812 KB) | DOI: 10.14238/pi33.1-2.1993.24-31
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.541 KB) | DOI: 10.14238/pi28.5-6.1988.97-104
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.227 KB) | DOI: 10.14238/pi16.9-10.1976.337-44
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (730.257 KB) | DOI: 10.14238/pi16.9-10.1976.365-72
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.412 KB) | DOI: 10.14238/pi16.9-10.1976.386-90