Diatom dan Paleolimnologi: Studi Komparasi Perjalanan Sejarah Danau Lac Saint-Augustine Quebeq-City, Canada dan Danau Rawa Pening Indonesia Diatom and Paleolimnology: Comparation Study of Historical Lakes Lac Saint- Augustine Quebeq-City, Canada and Rawa Pening Indonesia - Soeprobowati, Tri Retnaningsih (Biota, 2009)