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The thermometer of the engineer Chevalier was right… at 10 degrees the large rivers as well as the
LZT20A10_185

The thermometer of the engineer Chevalier was righ...

Subject 1, shows three degrees of each of the nine colours of the system as affected by various dgrees of shade, A new practical
LZT19B31_455

Subject 1, shows three degrees of each of the nine...