A Key to the British Freshwater Leeches, With Notes on Their Ecology (no.14) K. H Mann
1964. No Edition Remarks. 50 pages. Blue paper covers. Black and white illustrations throughout. Light tanning to pages. More prominent to text block edges. Binding remains firm. Paper covers have light edge-wear and corner curling with mild tanning overall. Spine has minor tanning, rolling and creasing.