If you click the 'Flag' by mouse, its mollusk postage stamps will be showed.

Malta
Czhechoslovakia
Romania
Japan

Sierra Leone
Papua
NewGuinea
Vietnam
Cuba

Madagascar
Australia
Marshall Islands
Nicaragua
Refference Materials
'The creature of an aquarium, Pocket pictorial book' Edited by Yoshitaka Abe, Issued from Syufu no Tomo Company, 1993year October.
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