OOn unity of systemOn unity of systemde Francis WalkerEdiciones (1)On unity of system (1862)Edward Newman · inglésMás obras de Francis WalkerList of the Specimens of the Hymenopterous Insects in the Collection of the ..1846Catalogue of the specimens of neuropterous insects in the collection of the British museum ..1852Characters of undescribed Lepidoptera Heterocera1869
CCharacters of undescribed species of the family ChalcidæCharacters of undescribed species of the family Chalcidæ1862
CCharacters of undescribed species of the genus LeucopsisCharacters of undescribed species of the genus Leucopsis1862
