... (2005), "Vietnamese forestry, biodiversity and threatened tree species", http://www.tropenbos.nl/documents/19-5 6Chapter2 .pdf (14/4/2008) , World Bank (2004), "Bao cao phat trien Viet Nam 2004- ... bang bieu thffc V{T) = p* fiTU)* + \E{T-A) e-'' *e-P'dt +\(N{t-'A) *e-"dt (3) V(T) = p * f(T; A) * e -" + \(N(t\ A) *e-'"dt (2) Trong dd: jD Id gid tri rong cua ddn vi gd (m^), gT= f(T; A) vd N(t;A) ... trien cay ca phe bdi canh gia ca phe the gidi dang len cao Trong thdi gian 1990-2000, dien tich trdng ca phe tang hang nam 20,7% va Viet Nam da trd nffdc xuat khau ca phe ldn thff hai tren the...