• 1 Middleton Shelving Facility

• 2 Engineering
• 1 Aeronautics
• 1 American Society of Safety Engineers
• 1 Building materials
• 1 Corporation reports
• 1 Industrial safety
• 1 Professional associations
• 1 Safety engineers
• 1 Sewage
• 1 Sewage disposal
• 1 Strength of materials
• 1 Testing
• 1 Trade associations

• 1 American Society for Testing Materials
• 1 American Society of Civil Engineers
• 1 American Society of Safety Engineers
• 1 Illinois Society of Professional Engineers
• 1 National Aeronautical Laboratory (India)
• 1 Water Environment Federation
• 1 Water Pollution Control Federation
• 1 Water Pollution Control Federation. Technical Practice Committee

• 5 English

• 1 Illinois
• 1 United States

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