sea-level use case
merepinnataseme kasutusmall
olemus
UML use case level 2
ülevaateid
https://softwareengineering.stackexchange.com/questions/364491/understanding-use-case-levels
https://www.scribd.com/doc/254742215/Uml-Lecture
olemus
UML use case level 2
ülevaateid
https://softwareengineering.stackexchange.com/questions/364491/understanding-use-case-levels
https://www.scribd.com/doc/254742215/Uml-Lecture