↑Reveal James L. System of Classification. PBIO 250 Lecture Notes: Plant Taxonomy. Department of Plant Biology, University of Maryland, 1999 Systematyka rzędu widłakowce wg Reveala
Reveal James L. System of Classification. PBIO 250 Lecture Notes: Plant Taxonomy. Department of Plant Biology, University of Maryland, 1999 Systematyka rzędu widłakowce wg Reveala