Singh, V.K. creator author. text New Delhi, [India] Random Publications LLP c2023 1st ed. monographic x, 276 pages : b&w illus. ; 24 cm. Contents: 1. Introduction. -- 2. Acanthocephala: character and classification. -- 3. Polychaete: character and classification. -- 4. Calcareous sponge: character and classification. -- 5. Trematoda: character and classification. -- 6. Sarcomastigophora: character and classification: 7. Priapulida: character and classification. -- 8. Sipuncula: character and classification. -- 9. Hydrozoa: character and classification. by V.K. Singh. Includes bibliographical references and index. Invertebrates--Classification Invertebrates Biological diversity Taxonomy Ref 592 Si64a 2023. 9789394137714 20260716111657.0