7th Edition. 66 pages. Paperback book with green cover. Black and white photographic plates throughout. Medium cracking to binding, front cover and spine are loose. Pages and plates have light tanning and foxing throughout. Water staining to some pages, text remains unaffected. Pencil inscription to first page. Paper cover has mild edgewear with curling to corners. Creasing to spine and rear cover. Stain to rear cover.