"MadhvaSiddhantaSara (PadarthaSangraha)" by Shree PadmaNabhaSuri - "A Primer of Dvaita Vedanta" - edited by Dr. D.N. Shanbhag [Dvaita Vedanta Studies 1994]

UPDATE from 09-June-2019: enhanced scan had been added (optimized size + OCR-txt-layer in English)

DOWNLOAD (Sanskrit-English, MB, OCR-layer):
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English annotation by Vishnudut1926: Incredible Grantha by OM VishnuPad Shree PadmaNabhaSuri-Acharya (Shree VedaGarbha PadmaNabhAcharya). 

In the foreword Dr. D.N. Shanbhag cites B.N.K. Sharma who justifiably notes that "Shree Padartha-Sangraha" by Shree PadmaNabhaSuri (Shree Madhwa-Sampradaya) is akin to "Shree YatindraMataDipika" by ShrinivasaDasa (Shree Ramanuja-Sampradaya):

This edition includes both Sanskrit and English texts, I recommend to read both in Sanskrit and English, because Sanskrit variant conveys the primary notions of Shree Madhwa-Siddhanta in a much better way.

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