Kalverboer, Alex Fedde. <br/><br/>
A neurobehavioural study in preschool children / 
by Alex Fedde Kalverboer. 
 - London :  Philadelphia :  Heinemann Medical [for] Spastics International Medical Publications ;  Lippincott,  1975. 
 - ix, 134 [i.e. 130] p. (2 fold.) :  ill., forms ;  25 cm. 
 - Clinics in developmental medicine ; no. 54 .