Oxford Biology Readers: four issues
1971, First Edition. London : Oxford University Press. Good set in the original stiff-card wrappers; edges slightly nicked and dust-dulled as with age.Includes previous owner's signature. Physical description; 4 issues : illustrations ; 25 cm. Contents; No. 6: Diving in Marine Mammals by R.J. Harrison and G.L. Kooyman ; No.....