BEYOND THE SHADOW OF A DOUBT
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✎ Suggest a correctionTells what an optical comparator is and does. Shows the complete line of standard machines; applications in the fields of electronics, machinery, appliances, foods, drugs, and others.
Complete catalog record
Source: Jones&Lam
Interest level: ad
Price: free-loan
Format: sd color
Interest level: ad
Price: free-loan
Format: sd color
Sources
- Educational film guide. Supplements (1959-62) — title, year, creator, length, format, color, sound, description, catalog record
Record added 2026-07-06 15:47:25 · Suggest a correction