TY - GEN AU - Hyde Harold Augustus AU - Wade A E AU - Harrison S G ED - National Museum of Wales TI - Welsh ferns, clubmosses, quillworts, and horsetails : : a descriptive handbook AV - QK527 U1 - 587.09429 PY - 1969/// CY - Cardiff PB - National Museum of Wales KW - Ferns KW - Wales KW - Pteridophyta N1 - Includes bibliographical references (p. 164-166) and index ER -