Environmental studies by Bir, Ritu

Forest vegetation characteristics of Indian Hills by Bir, S.S

Forest vegetation characteristics of Indian hills by Bir, S.S

Chromosome numbers evolutionary status of ferns fern allies of Pachmarhi hills (Central India) by Bir fna, S.S

Pteridophytes: their morphology, cytology, taxonomy and phylogeny

Other Authors: “…Bir, S.S…”

Vistas in palynology perspectives and prospects

Other Authors: “…Bahadur, Bir, ed…”

Perspectives in plant science in India : proceedings

Other Authors: “…Bir, S.S., ed…”

Pole, paddle and portage by Riviere, Bill

Concise illustrated atlas of the world by Lye, Keith