Study on the international law issues of protective jurisdiction Study on the international law issues of protective jurisdiction. 并列题名:Study on the international law issues of protective jurisdiction Study on the international systems of protecting plant variety Study of private international law issues in cross-border surrogacy Research on the international legal system of diplomatic protection 并列题名:Study on the international systems of protecting plant variety Studies on international admiralty jurisdiction 并列题名:Study of private international law issues in cross-border surrogacy 并列题名:Research on the international legal system of diplomatic protection