00648nam a2200121Ia 450000500170000008000180001710000250003524501260006026000690018630000120025552002400026758300190050720260716043135.0  a08.10.02 S167  aSalisbury, Lutishoor  aIndustrial rocks and minerals of Trinidad and Tobago: a bibliography of their economic geology extraction and utilisation  bQuarry Association of Trinidad and TobagoaPort of SpainTTc1992  avi,43p.  aIntended as a comparison volume to the 'Bibliographical guide to resources on the geology of Trinidad and Tobago' which was prepared on the occasion of the First Conference of the Geological Society of Trinidad and Tobago held in 1985.  c3/7/00kM2LMGR