16S3: Trigo lesson 10 - Trigo proving by Gary Ang | Aug 29, 2016 | 16S3, Board-casts | 0 comments [vimeography id="635"] In this lesson, we practiced more questions on trigo proving. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ