Jataka Dwadasa Bhava Phala (Part I – House 1 to 5) by K N Saraswathy
Also Review
Anga Vidya (or Instant Astrological Forecast) by Varahamihira (Translation by K N Saraswathy)
Jataka Tattvam (Classic) by K N Saraswathy
Prasna Aaroodha (Problem Solving Astrology) by K N Saraswathy