Chhapgar, B.F. Wonders of the deep sea/ B.F. Chhapgar - New Delhi: National Book Trust, 2006. - 52 p. ; 24 cm. - (Nehru Bal Pustakalaya) . ISBN: 9788123743103 Subjects--Topical Terms: Ocean -- Juvenile literatureOcean Dewey Class. No.: 591.77083022 / CHH/W