00289nam a2200109Ia 450000500170000000800410001708200120005810000170007024500370008726000470012430000080017120260225050911.0260224s9999||||xx |||||||||||||| ||und||  a587 SPO  aK.R. Sporne  4aThe morphology of Pteridophytes   aIslamabad: National Book Foundation c1970  a192