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Russia

postage

1967, Jan 25 Montreal World Exposition issue unwmk p. 12

X	4k	multi	Sea-water distilling apparatus
X	6k	multi	Image of atom
X	10k	multi
-	30k	multi		—	—

Japan

1966, Feb 25 famous gardens 1966 issue p. 13.5

-

15y

multi

Kenrokuen Garden

Netherlands

1967, Jan 25 Delft University 125th issue (no perf info)

X

20c

olyel

Auditorium of the Polytechnic University Delft

1 to 6 of 6