| Biology of waste water treatment. NF Gray Biology of waste water treatment., 1989 | 926* | 1989 |
| Drinking water quality: problems and solutions. NF Gray | 755 | 1994 |
| Water Technology: An Introduction for Scientists and Engineers NF Gray Arnold, 1999 | 710* | 1999 |
| Environmental impact and remediation of acid mine drainage: a management problem NF Gray Environmental geology 30, 62-71, 1997 | 575 | 1997 |
| Microbiology of waterborne diseases. S Percival, R Chalmers, M Embrey, P Hunter, J Sellwood, P Wyn-Jones | 384 | 2004 |
| Comparative performance of six carbon footprint models for use in Ireland T Kenny, NF Gray Environmental impact assessment review 29 (1), 1-6, 2009 | 280 | 2009 |
| Replacement of chemical oxygen demand (COD) with total organic carbon (TOC) for monitoring wastewater treatment performance to minimize disposal of toxic analytical waste D Dubber, NF Gray Journal of Environmental Science and Health Part A 45 (12), 1595-1600, 2010 | 271 | 2010 |
| Acid mine drainage composition and the implications for its impact on lotic systems NF Gray Water Research 32 (7), 2122-2134, 1998 | 254 | 1998 |
| The coliform index and waterborne disease: problems of microbial drinking water assessment C Gleeson, N Gray CRC Press, 1996 | 246 | 1996 |
| Nematophagous fungi with particular reference to their ecology NF Gray Biological Reviews 62 (3), 245-304, 1987 | 186 | 1987 |
| Activated sludge: theory and practice. NF Gray | 163 | 1990 |
| Field assessment of acid mine drainage contamination in surface and ground water NF Gray Environmental Geology 27, 358-361, 1996 | 132 | 1996 |
| Aerobic digestion of pharmaceutical and domestic wastewater sludges at ambient temperature S Bernard, NF Gray Water Research 34 (3), 725-734, 2000 | 130 | 2000 |
| Ecology of nematophagous fungi: distribution and habitat NF Gray Annals of Applied Biology 102 (3), 501-509, 1983 | 99 | 1983 |
| Fungi attacking vermiform nematodes NF Gray Diseases of nematodes, 13-48, 2018 | 97 | 2018 |
| Comparison of benthic macroinvertebrate indices for the assessment of the impact of acid mine drainage on an Irish river below an abandoned Cu–S mine NF Gray, E Delaney Environmental Pollution 155 (1), 31-40, 2008 | 89 | 2008 |
| A preliminary survey of household and personal carbon dioxide emissions in Ireland T Kenny, NF Gray Environment international 35 (2), 259-272, 2009 | 84 | 2009 |
| Ecology of nematophagous fungi: effect of soil moisture, organic matter, pH and nematode density on distribution NF Gray Soil Biology and Biochemistry 17 (4), 499-507, 1985 | 84 | 1985 |
| Ecology of nematophagous fungi: comparison of the soil sprinkling method with the Baermann funnel technique in the isolation of endoparasites NF Gray Soil Biology and Biochemistry 16 (1), 81-83, 1984 | 82 | 1984 |
| An SDN/NFV-enabled enterprise network architecture offering fine-grained security policy enforcement C Lorenz, D Hock, J Scherer, R Durner, W Kellerer, S Gebert, N Gray, ... IEEE communications magazine 55 (3), 217-223, 2017 | 79 | 2017 |
