Books by Michael S. Engel
Innumerable Insects
Diverse Neuropterida in Cretac
Diverse Neuropterida in Cretaceous amber, with particular reference to the paleofauna of Myanmar (Insecta)
A new species of the bee genus Eoanthidium with extraordinary male femoral organs from the Arabian Peninsula (Hymenoptera: Megachilidae)
Classification of the bee trib
Classification of the bee tribe Augochlorini (Hymenoptera: Halictidae)
New genera and subgenera of augochlorine bees (Hymenoptera: Halictidae)