TY - BOOK ID - 1505502 TI - Graphs and digraphs AU - Chartrand, Gary AU - Lesniak-Foster, Linda PY - 2005 SN - 1584883901 9781584883906 PB - Boca Raton: Chapman and Hall, DB - UniCat KW - Discrete mathematics KW - Graph theory KW - Directed graphs UR - https://www.unicat.be/uniCat?func=search&query=sysid:1505502 AB - ER -