LANGE-BERTALOT, Horst (ed.) 1999 Iconographia diatomologica. Annotated diatom micrographs. Vol. 6. Phytogeography-Diversity-Taxonomy Königstein, Germany: Koeltz. 295 pp., incl. pls. and figs. First printing: articles by Lange-Bertalot & Genkal, Lange-Bertalot, Krammer, and Metzeltin & Lange-Bertalot, INA entries made from first printing