lake sediments  search
UFlacustrine sediments
RTglacial geology
 sediments
 fluviolacustrine environment
 lacustrine environment
 geochemical surveys
 mineral exploration
 lakes
 glaciolacustrine environment
 glaciolacustrine sedimentation
SNBefore 1998, used chiefly for economic studies. Also search (lacustrine environment OR fluviolacustrine environment OR glaciolacustrine environment) AND sediments. Before 1981, also search sediments AND lakes. Added to Thesaurus in 1981.