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Journal of Northeastern University(Natural Science)
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15 May 1999, Volume 20 Issue 5
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1999, 20 (
5
): 451-453. DOI:
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1999, 20 (
5
): 454-456. DOI:
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196
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1999, 20 (
5
): 457-460. DOI:
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214
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1999, 20 (
5
): 461-463. DOI:
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1999, 20 (
5
): 464-467. DOI:
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1999, 20 (
5
): 468-471. DOI:
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1999, 20 (
5
): 472-475. DOI:
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242
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1999, 20 (
5
): 476-478. DOI:
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251
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1999, 20 (
5
): 479-481. DOI:
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175
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1999, 20 (
5
): 482-485. DOI:
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215
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1999, 20 (
5
): 486-488. DOI:
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198
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1999, 20 (
5
): 489-492. DOI:
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208
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1999, 20 (
5
): 493-496. DOI:
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185
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1999, 20 (
5
): 497-500. DOI:
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200
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1999, 20 (
5
): 501-504. DOI:
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183
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1999, 20 (
5
): 505-507. DOI:
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237
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1999, 20 (
5
): 508-510. DOI:
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1999, 20 (
5
): 511-514. DOI:
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477
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1999, 20 (
5
): 515-518. DOI:
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224
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1999, 20 (
5
): 519-521. DOI:
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231
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1999, 20 (
5
): 522-524. DOI:
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194
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426
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1999, 20 (
5
): 525-528. DOI:
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285
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1999, 20 (
5
): 529-532. DOI:
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220
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533
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1999, 20 (
5
): 533-535. DOI:
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221
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1999, 20 (
5
): 536-539. DOI:
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1999, 20 (
5
): 540-543. DOI:
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177
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1999, 20 (
5
): 544-547. DOI:
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192
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1999, 20 (
5
): 548-551. DOI:
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192
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1999, 20 (
5
): 552-554. DOI:
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195
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1999, 20 (
5
): 555-558. DOI:
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156
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1999, 20 (
5
): 559-561. DOI:
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199
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653
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1999, 20 (
5
): 562-564. DOI:
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165
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