This is not your average mystical tome, but a special spellbook by two practicing witches. Here is the thoroughly comprehensive, absolutely definitive guide to spells - the basic handbook for anyone looking to practice some hands-on magic. Delightfully well written and practical, filled with atmosph[...]
Unmanned aerial vehicles (UAVs) are increasingly used in military missions because they have the advantages of not placing human life at risk and of lowering operation costs. These benefits can be fully realized only if UAVs work cooperatively in groups with an efficient exchange of information. Thi[...]