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Y. R. Alston

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Stand Alone

The Biotechnology Directory 2000
The Biotechnology Directory 1999
The Biotechnology Directory, 1998
The Biotechnology Directory 1998
The Biotechnology Directory 1994
The Biotechnology Directory 1993
International Biotechnology Directory 1994: Products, Companies, Research and Organizations
International Biotechnology Directory
The International Biotechnology Directory 1991 Products, Companies, Research and Organization
The Biotechnology Directory, 1988 Products, Companies, Research and Organizations
The Biotechnology Directory 2001 In Association with Nature Biotechnology