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Journal of Northeastern University(Natural Science)
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15 June 1999, Volume 20 Issue 6
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1999, 20 (
6
): 565-568. DOI:
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1999, 20 (
6
): 569-572. DOI:
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1999, 20 (
6
): 573-575. DOI:
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1999, 20 (
6
): 576-579. DOI:
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202
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1999, 20 (
6
): 580-582. DOI:
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254
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1999, 20 (
6
): 583-586. DOI:
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228
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1999, 20 (
6
): 587-590. DOI:
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298
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1999, 20 (
6
): 591-593. DOI:
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274
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1999, 20 (
6
): 594-597. DOI:
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1999, 20 (
6
): 598-600. DOI:
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256
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1999, 20 (
6
): 601-604. DOI:
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243
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1999, 20 (
6
): 605-607. DOI:
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261
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1999, 20 (
6
): 608-611. DOI:
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221
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1999, 20 (
6
): 612-614. DOI:
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258
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1999, 20 (
6
): 615-618. DOI:
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198
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1999, 20 (
6
): 619-621. DOI:
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260
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1999, 20 (
6
): 622-625. DOI:
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206
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1999, 20 (
6
): 626-629. DOI:
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217
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1999, 20 (
6
): 630-632. DOI:
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312
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1999, 20 (
6
): 633-636. DOI:
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252
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1999, 20 (
6
): 637-640. DOI:
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312
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1999, 20 (
6
): 641-643. DOI:
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180
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1999, 20 (
6
): 644-646. DOI:
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225
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491
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1999, 20 (
6
): 647-650. DOI:
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292
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1999, 20 (
6
): 651-653. DOI:
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169
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1999, 20 (
6
): 654-656. DOI:
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216
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1999, 20 (
6
): 657-660. DOI:
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190
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1999, 20 (
6
): 661-664. DOI:
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225
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655
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1999, 20 (
6
): 665-667. DOI:
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270
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