Search Results for the EPA National Library Catalog

Items Found: 36

Showing: Items 1 - 36

Your Search: (AUTHOR=Walsh AND G.)

 
 
 

Select Item Title Year Published
Algal Bioassays of Industrial and Energy Process Effluents. 1982
Analysis by Chemical Class of Salmonella Mutagenicity Tests as Predictors of Animal Carcinogenicity (Journal Version). 1988
Anatomy of the Seed and Seedling of 'Spartina alterniflora' Lois. (Poaceae). 1990
Artificial Sediments for Use in Tests with Wetland Plants. 1990
Bostrichobranchus digonas: Confirmation of Its Presence in the Gulf of Mexico. 1989
Comparison of long-run forecasts of demand for fishing, hunting and nonconsumptive wildlife recreation based on the 1980 and 1985 national surveys / 1988
Comparison of the EC50s of Algal Toxicity Tests Calculated by Four Methods. 1987
Data Assessment Reports for CEMS (Continuous Emission Monitoring Systems) at Subpart Da Facilities. 1989
Economic benefits and costs of the fish stocking program at Blue Mesa Reservoir, Colorado 1987
Effect of Ampicillin-Induced Alterations in Murine Intestinal Microbiota on the Survival and Competition of Environmentally Released Pseudomonads. 1989
Effects of Organotins on Growth and Survival of Two Marine Diatoms, 'Skeletonema costatum' and 'Thalassiosira pseudonana'. 1985
Empirical application of a model for estimating the recreation value of instream flow 1980
Evaluating the Toxicity of Urban Patterns of Oxidant Gases. 1. An Automated Chronic Gaseous Animal Inhalation Exposure Facility. 1987
Final report of effect of fenthion on selected estuarine species related to field study. 1984
Gunnison County interindustry spending and employment attributed to fishing at Blue Mesa Reservoir / 1988
In vivo and In vitro Intestinal Survival and Competition of Environmental 'Pseudomonas' Species. 1988
Inhibition of Arm Regeneration by 'Ophioderma brevispina' (Echinodermata, Ophiuroidea) by Tributylin Oxide. 1986
Intralaboratory Precision of Saltwater Short-Term Chronic Toxicity Tests. 1989
Lugworm ('Arenicola cristata') Larvae in Toxicity Tests: Survival and Development When Exposed to Organotins. 1986
Measuring benefits and the economic value of water in recreation on high country reservoirs 1980
Microwave Irradiation for Rapid Killing and Fixing of Plant Tissue. 1989
Minutocellus polymorphus': A New Marine Diatom for Use in Algal Toxicity Tests. 1988
Option values, preservation values and recreational benefits of improved water quality : a case study of the South Platte River Basin, Colorado / 1977
Option values, preservation values and recreational benefits of improved water quality : a case study of the South Platte River Basin, Colorado / 1978
Option values, preservation values and recreational benefits of improved water quality : a case study of the South Platte River Basin, Colorado. 1978
Organotin Toxicity Studies Conducted with Selected Marine Organisms at EPA's Environmental Research Laboratory, Gulf Breeze, Florida. 1986
Principles of Toxicity Testing with Marine Unicellular Algae. 1988
Report on species tested and preliminary findings. 1983
Responses of Marine Unicellular Algae to Brominated Organic Compounds in Six Growth Media. 1987
Responses of Wetland Plants to Effluents in Water and Sediment. 1991
Review of outdoor recreation economic demand studies with nonmarket benefit estimates, 1968-1988 1988
Review of the Current Status of Marine Algal Toxicity Testing in the United States. 1993
Synthetic Substrata for Propagation and Testing of Soil and Sediment Organisms. 1992
Toxicity Tests of Effluents with Marsh Plants in Water and Sediment. 1991
Use of Marsh Plants for Toxicity Testing of Water and Sediment. 1992
Wildlife and fish use assessment long-run forecasts of participation in fishing, hunting and nonconsumptive wildlife recreation / 1987

Save, Print or Email Selected Records