Warning message Node revision 1833 not found in node Composition and Structure of the Ventriculitidae (Porifera, Hexactinellida) Family. Perharps it was deleted. Kuznetsova Nina F. RussiaVoronezhAll-Russian Research Institute of Forest Genetics, Breeding and Biotechnology, 105 Lomonosov St., Voronezh 394087, Russiacandidate of biological sciencesekogenlab@gmail.com Author's articles Droughts in the Forest-Steppe Zone of Central Chernozemic Region and Criteria for Evaluation of their Intensity