Animals Without Backbones (Vol. 1 & 2) by Ralph Buchsbaum
1955, No Stated Printing, Paperback Set.
Good. No markings. Covers show moderate wear and age Pages tanned.
Volume 1 cover is significantly more tanned than Volume 2.
Originally considered a biology textbook, it was the
first of its kind to be reviewed by popular magazines
as a work for the general public. In 2013, it was still
recommended reading at the University of Alberta.