Abstract
Andrija Mohorovičić was born on 23 January, 1857 in Volosko, Croatia. Last year was the 150th anniversary of his birth. Mohorovičić is known for finding the discontinuity between the mantle and the crust in the Earth using the bending of the traveltime curve from the earthquake on October 8, 1909 in Kupa Valley, which is 39 km southeast of Zagreb. This 5kn post-stamp is sold by Croatian Post Inc. (permission of HRVATSKA POŠTA d.d) since 23 April, 2007.
(Explanation: Junzo KASAHARA)