"Engineering (Design, Construction And Installation Works And Author'S Supervision) For The Construction Of Photovoltaic Systems (Pec) In Five Buildings Of Social Services In The Municipality Of Varna In Implementation Of Project No. Bg-Rrp-13.009-0002 "Installation Of Photovoltaic Systems In Buildings Of Social Services In The Municipality Of Varna And Purchase Of An Electric Vehicle With A Charging Station, By Separate Items"