Inscription
on verso, by unknown hand, upper left in red crayon in a box: 40; by unknown hand, upper right in blue crayon: 88; center, printed in blue ink on label: EUROPE'S CHILDREN/Hungary SCHOOL IMPROVISATION 4-26: at a secondary school in Szeged where teachers and pupils have met shortage of lab equipment by making their own, a chemical experiment is in progress to prove Ca CO3 + 2HCL = CO2 + CL2. The CO2 is heavier than air and extinguishes the candle's light.; center right, stamped in blue ink: PHOTO BY DAVID SEYMOUR-MAGNUM MAGNUM PHOTOS 125, Faubourg St-Honoré, 125 ELYsées 51-28 PARIS-8; by unknown hand, center left in red crayon underlined with arrows extending to edges on either side: 125 mm; center right printed in black ink: SPECIAL PHOTO FOR U.N.E.S.C.O; by unknown hand, lower left in blue ink: S-G-Austria; by unknown hand, lower left in graphite: No l8878- unesco-; by unknown hand, lower right in blue ink: Return to UNESCO
other verso markings: a line in graphite drawn diagonally across center from upper left corner to lower right corner; a line in graphite drawn across bottom with diagonal lines in red crayon below; lower left in red crayon three "v" shaped lines
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