University of Guyana Library Search for 'pb:Bishen Singh Mahendra Pal Singh, '

Origin and evolution of gymnosperms/

Dehra Dun, India: Bishen Singh Mahendra Pal Singh, 2003 . xiv, 504p.: 812110310X

Dehra Dun, India : Bishen Singh Mahendra Pal Singh, 2003 . viii, 360 p. : 8121103045

Dehra Dun, India: Bishen Singh Mahendra Pal Singh, 2003 . xxiii, 396p.: 8121103096

Dehra Dun, India: Bishen Singh Mahendra Pal Singh, 2003 . xiv,504p. ill., diagrs., photos. 812110310X

Dehra Dun, India: Bishen Singh Mahendra Pal Singh, 2003 . xiv,504p. ill., diagrs., photos. 812110310X