Stamps Year 1991

Russia - Customs, traditions and popular festivals
francisco menendez
Luis Ballester
Nature Reserve - Lake Baikal - Marta Zibellina
francisco menendez
Aral Sea- saline desert - Saiga Antelope
francisco menendez
Volga river - floods - Volga sturgeon
francisco menendez
RGE147 - Classic American type machine 1873
Jose Luis Marin
Andrei Dmitrievich Sakharov - Nobel Peace Prize 1975
francisco menendez
Ivan Petrovich Pavlov - Nobel Prize in Medicine 1904
francisco menendez
Ilya Ilyich Mechhnikov - Nobel Prize in Medicine 1908
francisco menendez
Vasily Osipovich Klyuchevsky - Russian historian
francisco menendez