Morphology of Invertebrate Types is a scientific book written by Alexander Ivanovitch Petrunkevitch and first published in 1916. The book is focused on the study of invertebrates, which are animals without a backbone. It provides a detailed description of the morphology of various invertebrate types including arthropods, mollusks, echinoderms, and others.The book is divided into several chapters, each of which focuses on a particular group of invertebrates...