00567nam a2200193Ia 4500 CTU_29239 210402s9999 xx 000 0 und d 634 F716/N2 J. J W. Coppen Non-wood forest products; N.2 Gum naval stores: turpentine and rosin from pine resin J. J W. Coppen, FAO, G A Hone Rome FAO 1995 forest products Nguyễn Quang Điền, 990315 Trung tâm Học liệu Trường Đại học Cần Thơ