P. Pannangpetch. [19--]. Model of N allocation and synthesis of dry matter. [S.l.:s.n.];
P. Pannangpetch. ([19--]) Model of N allocation and synthesis of dry matter (รายงานผลงานวิจัย). s.n.]:[S.l.
P. Pannangpetch. Model of N allocation and synthesis of dry matter. [S.l.:s.n.], [19--].
P. Pannangpetch. ([19--]) Model of N allocation and synthesis of dry matter (รายงานผลงานวิจัย). s.n.]:[S.l.