river, to the Drina and Neretva rivers north of Dubrovnik. Croatian historian Nada Klaić disputed the eastward (Bosnian) extension of Tomislav's kingdom in her 1972 book. Josip Lučić and Franjo Šanjek's 1993 Hrvatski povijesni zemljovid (Croatian Historical Map) depicted the extent of Tomislav's kingdom. Lučić, an historical geographer at the Faculty of Philosophy in Zagreb, authored a number of maps in Croatian history books. In his 1995 book, Hrvatski rani srednji vijek, Ivo Goldstein wrote that Tomislav did not expand deep into inner Bosnia and incorporated only parts of Pannonia (not the region between the Drava and Sava, which Goldstein said was terra nullius. Neven Budak agreed with Goldstein about the Drava-Sava region, saying that the northern Croatian border probably passed through the Sisak area. Modern university history textbooks in Croatia, such as Tomislav Raukar's Hrvatsko srednjovjekovlje (1997), say that Tomislav's kingdom covered 60 to 80 percent of present-day Bosnia and Herzegovina. Franjo Šanjek edited a 16-author work on the medieval Croatian state which is also used as a university textbook and includes this view. According to John Van Antwerp Fine Tomislav's northern border was the Drava River. South of it, the king held "modern Croatia, Slavonia, northern and western Bosnia, and the territory along the Dalmatian coast from what is now Rijeka to at least the mouth of the Cetina River (excluding the scattered Byzantine towns)". Fine criticized the relationship between Tomislav's territory and modern Croatian nationalist sentiment in his 2006 book, calling 10th-century sources unreliable and "roughly a third" of Croatia's perceived eastern land "entirely speculation". Fine wrote, "It is possible that Croatia really did have some of it, but Bulgaria may have had some of it; early Serb entities may have had some of it, not to speak of various župans and other local Slavic lords who in any serious way answered to no one. If the last supposition is true (to any degree), then parts of this territory would not have been held by any 'state. Acknowledging the possibility that Croatia held all the depicted territory and more, Fine said that whoever controlled the eastern land depicted in Tomislav's kingdom is unknown and should be marked as terra incognita on maps. He criticised Lučić and Šanjek's delineation of Tomislav's eastern border as "nationalist map-making" and "distorting the perceptions of children on their nation's history in a way that promotes interpreting later events as territorial loss and