TY  - BOOK
AU  - PNg T C
AU  - Goh C B
AU  - Rahman K
AU  - Yoon P K
TI  - Controlled upward tapping
PB  - Proceedings of the RRIM Planters Conference, Kuala Lumpur, 1976; p177-207
KW  - Tapping technique
KW  - Upward tapping
ER  -