1 “..., and this the author has endeavoured to provide. A zoologist and hydrobiologist hirnself, he has concentrated...”

2 “... been a subject of study of mostly Bulgarian zoologists for more than a century. This is the first...”

3 “... will be of great interest to invertebrate zoologists and limnologists, particularly those interested in freshwater...”

4 “... zoologists. During the last twenty years, however, this intriguing phylum has attracted the attention both...”

5 “..., zoologists, botanists, paleontologists, microbiologists, geologists, chemists, and archaeologists; (2) search...”

6 “... by anthropologists, ecologists, conservationists, entrepreneurs, geographers, sociologists, and zoologists over...”

7 “... scientists such as zoologists, aquatic biologists, fisheries and aquaculture professionals, as well...”

8 “... between Algae and Flagellata, the latter having been regarded by zoologists as a group of the Protozoa...”