Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This book will guide the intermediate programmer, step by step, on how to build a graphical calculator for Windows, Linux and most Macs. Using the free-of-charge multi-platform Object Pascal Language and the amazing Lazarus Integrated Developer Environment.