00329nam a2200121Ia 4500008004100000020001700041041000700058082000800065100002200073245007200095260002900167300001100196180612s9999||||xx |||||||||||||| ||und||  a0216903254 .  aen  a591  aHansell Michael H 0aExperimental animal behaviour : a selection of laboratory exercises  aLondon :bBlackie,c1977  a186 p.