N 37 PARK ROW NEW YORK. SECRET SOCIETIES AMONG COLLEGE STUDENTS. PROGRESS OF PATENTS. WOOD AND STRAW PAPER MAKING IN FRANCE. TWO INTERESTING DISCOVERIES. NEW ORDER BY THE COMMISSIONER OF PATENTS. PETROLEUM AND PINE TAR GASES. contents :, scientific american, 1873-11-01
N 37 PARK ROW NEW YORK. SECRET SOCIETIES AMONG COLLEGE STUDENTS. PROGRESS OF PATENTS. WOOD AND STRAW PAPER MAKING IN FRANCE. TWO INTERESTING DISCOVERIES. NEW ORDER BY THE COMMISSIONER OF PATENTS. PETROLEUM AND PINE TAR GASES. contents :, scientific american, 1873-11-01
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