Lin, Guobin <br/><br/>
Numerical competence in monkeys  Numerousness concept, conservation of quantity, summation and estimation for mumerousness /  [article]: 
Guobin Lin 
 - Bangi :  Penerbit Universiti Kebangsaan Malaysia,  2000. 
<br/><br/> PTSL Koleksi Asia Tenggara : (Pages 357-364), (Call Number : BF20.A37 1994)