D. L. Clark

Office of River Protection Integrated Safety Management System Description

D. L. Clark, 1999 .

Distribution of uidA gene sequences in Escherichia coli isolates in water sources and comparison with the expression of beta-glucuronidase activity in 4-methylumbelliferyl-beta-D-glucuronide media

D. L. Clark, I. Rivera, M. Martins, 1993, Applied and environmental microbiology.

Detection of virulence factors in culturable Escherichia coli isolates from water samples by DNA probes and recovery of toxin-bearing strains in minimal o-nitrophenol-beta-D-galactopyranoside-4-methylumbelliferyl-beta-D-g luc uronide media

D. L. Clark, I. Rivera, M. Martins, 1992, Applied and environmental microbiology.

Distribution ofuidAGeneSequences inEscherichia coli Isolates inWaterSources andComparison with theExpression of,B-Glucuronidase Activity in

D. L. Clark, I. Rivera, M. Martins, 1993 .

Detection ofVirulence Factors inCulturable Escherichia coli Isolates fromWaterSamples byDNA ProbesandRecovery ofToxin-Bearing Strains inMinimal o-Nitrophenol-13-D- Galactopyranoside4-Methylumbelliferyl-

D. L. Clark, I. Rivera, M. Martins, 1992 .

Total coliform detection in drinking water: comparison of membrane filtration with Colilert and Coliquik

B. B. Milner, D. L. Clark, B. Olson, 1991, Applied and environmental microbiology.

Comparative study of commercial 4-methylumbelliferyl-beta-D-glucuronide preparations with the Standard Methods membrane filtration fecal coliform test for the detection of Escherichia coli in water samples

B. B. Milner, B H Olson, D. L. Clark, 1991, Applied and environmental microbiology.