Microscopes and Accessory Apparatus: Catalogue No. 40 — Demonstration lens-holder No. 59. Focussing-lens No. 60. Handle No. 61.

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Microscopes and Accessory Apparatus: Catalogue No. 40 Demonstration lens-holder No. 59. Focussing-lens No. 60. Handle No. 61. · ch 52/97

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