ОГ
Каталог "Статии" | Периодични издания
Evaluation of secondary pupils' chemical problem-solving skills using a problem-solving model
(1993)
F. ASIEBA;
O. Egbugara
УА/A28
УЛ2-3
Каталог "Статии" | Периодични издания
An approach for solving a scheduling problem for multipurpose batch chemical plants
(1996)
N VAKLIEVA-BANCHEVA;
B. Ivanov
