AN IMPROVED BOLT HEADING MACHINE. BETTS' BOLT HEADING MACHINE. Tin Salt in Gingerbread. A REVOLVING .SHIELD FOR CARS. THE FAMINE IN INDIA. SHANAFELT'S REVOLVING SHIELD FOR CARS. THE FAMINE IN INDIA—REFUGEES IN A GOVERNMENT CAMP., scientific american, 1892-06-18
AN IMPROVED BOLT HEADING MACHINE. BETTS' BOLT HEADING MACHINE. Tin Salt in Gingerbread. A REVOLVING .SHIELD FOR CARS. THE FAMINE IN INDIA. SHANAFELT'S REVOLVING SHIELD FOR CARS. THE FAMINE IN INDIA—REFUGEES IN A GOVERNMENT CAMP., scientific american, 1892-06-18
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