The Malayan rubber-growing industries with emphasis on its problems and prospects / Goh Gaik Choo
Internet
http://studentsrepo.um.edu.my/3691/http://studentsrepo.um.edu.my/3691/1/Introduction.pdf
http://studentsrepo.um.edu.my/3691/2/Tale_of_content.pdf
http://studentsrepo.um.edu.my/3691/3/Chapter_1.pdf
http://studentsrepo.um.edu.my/3691/4/Chapter_2.pdf
http://studentsrepo.um.edu.my/3691/5/Chapter_3.pdf
http://studentsrepo.um.edu.my/3691/6/Chapter_4.pdf
http://studentsrepo.um.edu.my/3691/7/Chapter_5.pdf
http://studentsrepo.um.edu.my/3691/8/Appendix.pdf
http://studentsrepo.um.edu.my/3691/9/Bibliography.pdf