Search Results       Your search for [subject]Aftershock observation returned 1 record.           The Third Annual Geological Convention, 5-7 December 1990, UP-NIGS, Quezon City, Philippines Proceedings, volume 1. Diliman, Quezon City: Geological Society of the Philippines. Subject: Luzon earthquake; Earthquake damage; Aftershock observation; Earthquake epicenter -- Direction of rupture.          Add to Book Cart Relevance: 18.24%