Laporan tahunan =  annual report 

 - Kuala Lumpur :  Lembaga Penyelidikan dan Kemajuan Getah Malaysia,  1995 
 - v. :  ill.  ;  30 cm. 
 - Annually 
<br/><br/> Kepunyaan PTSL : 1976, 1977, 1979, 1980, 1982, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 
<br/><br/><br/>mayeng