The audio link to the 19th part of the lecture by adiyen on Sri Ramanuja’s bhashya on the Bhagavad Gita is as below – The 13th, 14th and 15th verses of the 4th chapter are covered.
https://drive.google.com/open?id=1FolGXTVsQeVrRq57zYwpv348u1Q2xuBJ
Dasan
Sreeram.