https://digital.sciencehistory.org/works/z3t2dzt Czechoslovakian postage stamp commemorating the International Congress on the History of Pharmacy http://rightsstatements.org/vocab/InC/1.0/ Lukavský, Jaroslav, 1924-1984 1971 1971 Czechoslovakian postage stamp featuring the medicinal herb Valerian (Valeriana officinalis) alongside antique pharmacy mortars and pestles. Valerian is a plant that was used by the Greeks and Romans to treat insomnia, migraines, fatigue, and stomach cramps. Today, it is commonly sold as a dietary supplement to treat insomnia. Witco Stamp Collection 4.4 cm W x 2.7 cm H Czechoslovakia Czech Jaroslav Lukavský image postage stamps https://digital.sciencehistory.org/downloads/deriv/25jmdmw/thumb_large_2X?disposition=inline https://digital.sciencehistory.org/works/z3t2dzt http://rightsstatements.org/vocab/InC/1.0/ postage stamps https://digital.sciencehistory.org/downloads/deriv/25jmdmw/download_full?disposition=inline