Lectures on Conditioned Reflexes: Twenty-Five Years of Objective Study of the Higher Nervous Activity (Behaviour) of Animals

First edition in English. Signed by Ivan P. Palov on the half-title page. (2) 414 (2) pp, illus. Bound in black ribbed cloth with gilt lettering. Very Good with minor rubbing to cloth, slight bruising to spine ends. Small split to inner hinge. Contents have modest toning, rear hinge exposed and binding at rear tender. Laid-in is an envelope addressed to Pavlov at Institute for Experimental Research, Moscow, USSR dated 1935. Several other related pamphlets and ephemera are laid-in. Very Good dust jacket unclipped ($6.50) with toned and sunned spine, chipping to ends, small split to foot, rear flap at joint, and light soiling. Archival repair to recto mending a large split at front spine joint. The Russian behavioral psychologist's famous work on mental conditioning. Uncommon signed.