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Your search for [author]Curtis, Helena returned 14 records.

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Relevance: 22.15%

Relevance: 21.79%

Biology.

by Curtis, Helena; New York: Worth Publishers, 1989.

Subject: Biology.

Relevance: 20.35%

Invitation to biology.

by Curtis, Helena.; [S. l.]: Worth Pub., 1977.

Subject: Biology.

Relevance: 20.35%

Relevance: 16.55%

Biology.

by Curtis, Helena F.; New York: Worth Publishers, 1968.

Subject: Biology.

Relevance: 16.55%

Biology.

by Curtis, Helena; [New York: Worth Publishers, 1968.

Subject: Biology.

Relevance: 16.55%

The viruses.

by Curtis, Helena; Garden City, N.Y.: Natural History Press, 1965.

Subject: Viruses.

Relevance: 16.55%

Biology.

by Curtis, Helena; New York: Worth Publishers, 1979.

Relevance: 16.55%

Invitation to biology.

by Curtis, Helena; New York: Worth Publishers, 1981.

Relevance: 16.55%

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