HIPPOLYTE DUSSAUCE
R. MAVRODINEANU
SAMUEL PARKES
AUGUST KEKULE
WILHELM OSTWALD
INSTITUTION OF MINING AND METALLURGY
RICHARD JOHN ERNST SCOTT
HIPPOLYTE DUSSAUCE
R. MAVRODINEANU
SAMUEL PARKES
AUGUST KEKULE
WILHELM OSTWALD
INSTITUTION OF MINING AND METALLURGY
RICHARD JOHN ERNST SCOTT