Yazar

James A Erdman

10 cilt bulundu.

Cilt sonuçları

Field cropsElemental composition of corn grains, soybean seeds, pasture grasses, and associated soils from selected areas in MissouriJames A. Erdman

Elemental composition of corn grains, soybean seeds, pasture grasses, and associated soils from selected areas in Missouri

James A. Erdman · U.S. Govt. Print. Off.

23 sayfa · 1976

Agricultural ecology / Biogeochemistry / Composition / Crops and soils / Field crops

PlantsElemental composition of selected native plants and associated soils from major vegetation-type areas in MissouriJames A. Erdman

Elemental composition of selected native plants and associated soils from major vegetation-type areas in Missouri

James A. Erdman · U.S. Govt. Print. Off.

87 sayfa · 1976

Biogeochemistry / Composition / Plant ecology / Plant-soil relationships / Plants

Water qualityImpact of the lower Alamosa River water on alfalfa, southwestern San Luis Valley, Colorado--1994 follow-up studyJames A. Erdman

Impact of the lower Alamosa River water on alfalfa, southwestern San Luis Valley, Colorado--1994 follow-up study

James A. Erdman · U.S. Geological Survey

13 sayfa · 1995

Alfalfa / Effect of water pollution on / Irrigation water / Pollution / Water quality

Soil pollutionImpact of the Summitville Mine on irrigation water, agricultural soils, and alfalfa in the southwestern San Luis Valley, ColoradoJames A. Erdman

Impact of the Summitville Mine on irrigation water, agricultural soils, and alfalfa in the southwestern San Luis Valley, Colorado

James A. Erdman · U.S. Geological Survey

Sayfa sayısı yok · 1993

Environmental aspects of Gold mines and mining / Gold mines and mining / Irrigation water / Pollution / Soil pollution

Geobotanical prospectingAnalytical results, basic statistics, and locality map of rabbitbrush (genus Chrysothamnus) samples from the Mineral Hot Springs and Valley View Hot Springs known geothermal resource areas, northern San Luis Valley, ColoradoJames A Erdman

Analytical results, basic statistics, and locality map of rabbitbrush (genus Chrysothamnus) samples from the Mineral Hot Springs and Valley View Hot Springs known geothermal resource areas, northern San Luis Valley, Colorado

James A Erdman · U.S. Dept. of the Interior, U.S. Geological Survey

18 sayfa · 1993

Geochemical prospecting / Chrysothamnus / Geothermal resources / Geobotanical prospecting

IrrigationImpact of the lower Alamosa River water on alfalfa, southwestern San Luis Valley, Colorado--1995 follow-up study of effects from the Summitville MineJames A Erdman

Impact of the lower Alamosa River water on alfalfa, southwestern San Luis Valley, Colorado--1995 follow-up study of effects from the Summitville Mine

James A Erdman · U.S. Dept. of the Interior, U.S. Geological Survey

Sayfa sayısı yok · 1996

Acid mine drainage / Alfalfa / Environmental aspects / Environmental aspects of Acid mine drainage / Irrigation

Environmental aspectsEnvironment of Mesa Verde, ColoradoJames A. Erdman

Environment of Mesa Verde, Colorado

James A. Erdman · U.S. National Park Service

72 sayfa · 1969

Physical geography / Ecology / Archaeology / Environmental aspects

Biogeochemical prospectingThe use of plants in prospecting for precious metals, principally goldJames A Erdman

The use of plants in prospecting for precious metals, principally gold

James A Erdman · U.S. Dept. of the Interior, Geological Survey

Sayfa sayısı yok · 1985

Bibliography / Biogeochemical prospecting

BiogeochemistryA case for plants in explorationJames A Erdman

A case for plants in exploration

James A Erdman · U.S. Dept. of the Interior, Geological Survey

Sayfa sayısı yok · 1985

Biogeochemistry

Plant successionPinyon-juniper succession after natural fires on residual soils of Mesa Verde, ColoradoJames A. Erdman

Pinyon-juniper succession after natural fires on residual soils of Mesa Verde, Colorado

James A. Erdman · Brigham Young University

24 sayfa · 1970

Fire ecology / Forest ecology / Plant succession