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Environmental assessments and statements
John E. Heer, Jr., D. Joseph Hagerty
Opportunities in engineering technology careers
John E. Heer, D. Joseph Hagerty ; foreword by David E. Hornbeck
Handbook of solid waste disposal : materials and energy recovery
Joseph L. Pavoni, John E. Heer, Jr., D. Joseph Hagerty
Solid waste management
[by] D. Joseph Hagerty, Joseph L. Pavoni, and John E. Heer, Jr