BIOMEDICAL AND ENVIRONMENTAL SCIENCES, Volume 12, Issue 4,1999, Pages 296-303,
BIOMEDICAL AND ENVIRONMENTAL SCIENCES, Volume 12, Issue 4,1999, Pages 292-295,
BIOMEDICAL AND ENVIRONMENTAL SCIENCES, Volume 12, Issue 4,1999, Pages 270-284,
BIOMEDICAL AND ENVIRONMENTAL SCIENCES, Volume 12, Issue 4,1999, Pages 317-323,
BIOMEDICAL AND ENVIRONMENTAL SCIENCES, Volume 12, Issue 4,1999, Pages 314-316,