First edition, first impression. 164pp, with some charts and diagrams in text. Blue cloth-covered boards with gilt lettering front and spine. 8vo. An ex lending library copy with usual markings - call number taped to spine, bookplate, bar code, lending sheet and stamps on front endpapers, small stamp on copyright page and ticks again section headings on contents pages. Cloth covers are worn, heavily rubbed around spine, gently rubbed at corners, with some discolouration on verso. Internally neat. clean, tight and bright barring the stated library markings.
