فهرس المقالات Lanthanum(III) oxide حرية الوصول المقاله صفحة الملخص نص كامل 1 - La2O3 as a very effective double-functional catalyst for the production of 2-amino-4-aryl-4H-pyrans and Pyrazolopyranopyrimidines Alireza Kohzadian Rohollah Fathollahi Mostafa Karami Esmail Korani Abdolkarim Zare 10.30495/ijc.2023.1990117.2017