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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 (
4
): 362-365. DOI:
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1999, 20 (
4
): 366-368. DOI:
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198
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1999, 20 (
4
): 369-372. DOI:
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1999, 20 (
4
): 373-375. DOI:
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256
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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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217
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1999, 20 (
4
): 388-391. DOI:
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258
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1999, 20 (
4
): 392-394. DOI:
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157
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1999, 20 (
4
): 395-397. DOI:
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259
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1999, 20 (
4
): 398-400. DOI:
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408
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1999, 20 (
4
): 401-404. DOI:
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242
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1999, 20 (
4
): 405-407. DOI:
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211
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1999, 20 (
4
): 408-410. DOI:
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1999, 20 (
4
): 411-413. DOI:
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256
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1999, 20 (
4
): 414-416. DOI:
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255
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1999, 20 (
4
): 418-421. DOI:
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218
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1999, 20 (
4
): 422-425. DOI:
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258
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1999, 20 (
4
): 426-429. DOI:
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189
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1999, 20 (
4
): 430-433. DOI:
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208
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1999, 20 (
4
): 434-437. DOI:
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232
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1999, 20 (
4
): 438-440. DOI:
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212
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1999, 20 (
4
): 441-443. DOI:
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201
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1999, 20 (
4
): 444-446. DOI:
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195
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1999, 20 (
4
): 447-450. DOI:
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574
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