11

High-efficiency combustion of natural gas with 21–30% oxygen-enriched air

Year:
2010
Language:
english
File:
PDF, 1.20 MB
english, 2010
13

Electronic payment systems: an analysis and comparison of types

Year:
2002
Language:
english
File:
PDF, 81 KB
english, 2002
20

New teaching strategies from student teachers’ pedagogical conceptual change in CALL

Year:
2020
Language:
english
File:
PDF, 904 KB
english, 2020