Glass Plate Negatives Series 2 - 1909 - 1959

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Diagrams, water wheels under Old London Bridge

Diagrams,chart, ideal distribution systems

Diagrams,Chelsea, Boulton & Watt engine

Diesel alternator set similar to Ashford Common set

Diesel tractor and scammell lorry

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

Dissolved oxygen recording apparatus photographs taken to assist in making a set of record drawings

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144
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149
150
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447
448
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