TY - BOOK AU - Engemann, Joseph G. AU - Hegner, Robert William TI - Invertebrate zoology SN - 002333780x AV - QL 362 .E54 1981 PY - 1981/// CY - New York PB - Macmillan Publishing Company KW - INVERTEBRATES -- ZOOLOGY N1 - Includes bibliographical references and index; 1. Basic principles of invertebrate zoology -- 2. Protozoa -- 3. Phylum porifera -- 4. Phylum coelenterata -- 5. Phylum Platyhelminthes -- 6. Phylum aschelminthes -- 7. Minor phyla -- 8. Phylum annelida -- 9. Phylum mollusca -- 10. Phylum arthropoda N2 - This approach also provides a more flexible text with greater usefulness in both lectures and laboratory ER -