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synthesises of new poly(imide-ether)and prepration and characterization of new poly(imide-ether)nanocomposit organoclay containing 3,3,4,4-phenylen dicarboxylic dianhydrid with 4,4-diamino diphenyl ether
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| 2 |
33-comparison of pollen sterility in 5 collected wild plants from shazand
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