Edward A. Barrett

Identifiers

• Open LibraryOL988773A

Top Subjects

• Ground control (Mining) (1)
• Photography, Stereoscopic (1)
• Mine roof control (1)
• Transparencies in education (1)
• Mine safety -- Study and teaching -- Audio-visual aids (1)
• Deafness, Noise induced -- Prevention (1)
• Mine safety (1)