Online Public Access Catalogue (OPAC)Library,Documentation and Information Science Division
“A research journal serves that narrow
borderland which separates the known from the unknown”
-P.C.Mahalanobis
500 Why on earth? [Washington, D.C.] : National Geographic Society, c1988. 96 p. : col. ill. ; 28 cm. Includes index. 0870447017 : $6.95 0870447068 (lib. bdg.) : $8.50 * Science - Miscellanea - Juvenile literature. Science - Miscellanea. Questions and answers.
