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Journal of Northeastern University(Natural Science)
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15 April 2000, Volume 21 Issue 4
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2000, 21 (
4
): 347-350. DOI:
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2000, 21 (
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2000, 21 (
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): 354-356. DOI:
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2000, 21 (
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2000, 21 (
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): 361-364. DOI:
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2000, 21 (
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): 365-367. DOI:
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2000, 21 (
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): 368-371. DOI:
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2000, 21 (
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): 372-375. DOI:
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2000, 21 (
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): 376-379. DOI:
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2000, 21 (
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): 380-382. DOI:
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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2000, 21 (
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): 427-430. DOI:
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2000, 21 (
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): 431-434. DOI:
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2000, 21 (
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): 435-438. DOI:
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2000, 21 (
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): 439-442. DOI:
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2000, 21 (
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): 443-446. DOI:
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2000, 21 (
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): 447-449. DOI:
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2000, 21 (
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): 450-452. DOI:
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2000, 21 (
4
): 453-455. DOI:
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2000, 21 (
4
): 456-458. DOI:
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2000, 21 (
4
): 459-461. DOI:
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