Muenchen, [Germany]: Omnibus Press, (1978).. (1978).. Good. - Small oblong octavo. Postcard book of 16 cards, each approximately 4-1/2 inches high by 6 inches wide, including a color pictorial title card, a printed rear cover card & 14 cards, each illustrated in black & white. The cards were originally bound together but are now disbound. The title card is rubbed and slightly darkened with a light vertical crease and with its top left corner soiled & slightly bumped. Good.
The edition was limited to 500 copies.
The postcards are numbered "Verhaltens Forscher" 1-15, with the rear cover card unnumbered. The rest of the text is in English.