chemical and biological studies of pterospermum semisagittatum (buch.-ham.-roxb) andfissistigmarubiginosum (a.dc.) sec.merr / Md. shahinulHaque Khan. [PhD Thesis] Khan, Md. shahinulHaque Chemistry 540.7 KHC Dhaka : University of Dhaka, 2002. 2002. 2003 Text x, 218p.: eng