1970 2 volumes. xiv, 528 p., 290 figures, 161 plates (27 coloured plates depicting the animals and 134 plates depicting the genital structures), cloth (dust jackets). Library stamps. Dust jackets with some (repaired) tears.
1984 2 volumes. xv, 376 p., 128 figures, 101 plates (18 coloured plates depicting the animals, 83 plates depicting the genital structures), cloth (dust jackets). Library stamps, else very good set.