Bancroft, Keith. <br/><br/>
The spotting of plantation para rubber (a prilimanary account of investigations on the couse of the spotting) / 
by Keith Bancroft, M.A. 
 - Kuala Lumpur :  Department of Agriculture,  1913. 
 - 30 p. :  ill. ;  23 cm. 
 - Bulletin ;  No.16. .