Stamps Year 1971

Accident Prevention-Unprotected Machinery.
Nemesio Ramirez Lemos
ITALY - Venice and its Lagoon
Juan Martinez Ferrer
"Personalities" Willi Bredel (writer) DDR.
Nemesio Ramirez Lemos
GERMANY - Germany - Rammelsberg mines, historic city of Goslar and hydraulic management system
Juan Martinez Ferrer
Accident prevention
Antonio Colorado
Accident prevention
Antonio Colorado
Accident prevention
Antonio Colorado
Accident prevention.
Antonio Colorado
"Sorbian dance costumes"Rejowanska drasta Slepo(DDR)
Nemesio Ramirez Lemos
Nazerat Illit.
Nemesio Ramirez Lemos