1 matching record(s)
file W (Stack)Bertele, Hugo von
"On the Perpetuum Mobile"
offprint from Bulletin of the National Association of Watch and Clock Collectors, Inc., vol. VII no. 5, October 1956, pp. 278-283.
[1964-79]
1956
1 matching record(s)
file W (Stack)Bertele, Hugo von
"On the Perpetuum Mobile"
offprint from Bulletin of the National Association of Watch and Clock Collectors, Inc., vol. VII no. 5, October 1956, pp. 278-283.
[1964-79]
1956