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Journal of Northeastern University(Natural Science)
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15 April 1999, Volume 20 Issue 4
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1999, 20 (
4
): 341-343. DOI:
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1999, 20 (
4
): 344-347. DOI:
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1999, 20 (
4
): 348-350. DOI:
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1999, 20 (
4
): 351-354. DOI:
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1999, 20 (
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): 355-358. DOI:
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1999, 20 (
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): 359-361. DOI:
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1999, 20 (
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): 362-365. DOI:
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1999, 20 (
4
): 366-368. DOI:
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1999, 20 (
4
): 369-372. DOI:
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1999, 20 (
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): 373-375. DOI:
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1999, 20 (
4
): 376-379. DOI:
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1999, 20 (
4
): 380-383. DOI:
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1999, 20 (
4
): 384-387. DOI:
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1999, 20 (
4
): 388-391. DOI:
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1999, 20 (
4
): 392-394. DOI:
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1999, 20 (
4
): 395-397. DOI:
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217
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1999, 20 (
4
): 398-400. DOI:
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1999, 20 (
4
): 401-404. DOI:
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1999, 20 (
4
): 405-407. DOI:
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173
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1999, 20 (
4
): 408-410. DOI:
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1999, 20 (
4
): 411-413. DOI:
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221
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1999, 20 (
4
): 414-416. DOI:
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230
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1999, 20 (
4
): 418-421. DOI:
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1999, 20 (
4
): 422-425. DOI:
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239
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1999, 20 (
4
): 426-429. DOI:
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165
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1999, 20 (
4
): 430-433. DOI:
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1999, 20 (
4
): 434-437. DOI:
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217
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1999, 20 (
4
): 438-440. DOI:
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200
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1999, 20 (
4
): 441-443. DOI:
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156
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1999, 20 (
4
): 444-446. DOI:
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182
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1999, 20 (
4
): 447-450. DOI:
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519
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