Botany for degree students: Vascular cryptogams: Pteridophyta Vol IV - P C Vashishta; VASISHTA (P C) (Delhi S Chand & Co Pvt Ltd, 1971)
Keywords: Vascular Cryptogams; Psilophyta; Lycophyta; Sphenophyta; Filicophyta; Eusporangiopsida; Leptosportangiopsida