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Inscribed "L G Hadley, 1943"

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.

Includes exam papers for: City and Guilds of London Institute, Department of Technology; the Borough Polytechnic Ordinary National Certificate and Higher National Certificate; Institute of Heating and Ventilating Engineers, associate entrance exams.

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.

Notes, lecture handouts and occasional sketches of equipment.