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281Published 1994“...HE 199 .E8 .R859...”
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282
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283
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284
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285
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286Published 1989“...HE 193 .P976 1989...”
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287Published 1989“...HE 193 .T7727 1989...”
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288
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289
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290Published 1991“...HE 199.5 .L5 .N532...”
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291
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293
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294
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295Published 1973“...HE 152 .F492...”
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296
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297Published 1993“...HE 311 .N52 .C3 .D758...”
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298Published 1991“...HE 297.5 .N532...”
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299
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300