The first significant manifestation of ethnic Macedonian nationalism was the book За Македонските Работи ("Za Makedonskite Raboti" – , Sofia, 1903) by Krste Misirkov. In the book Misirkov advocated that the Slavs of Macedonia should take a separate way from the Bulgarians and the Bulgarian language. Misirkov considered that the term "Macedonian" should be used to define the whole Slavic population of Macedonia, obliterating the existing division between Greeks, Bulgarians and Serbians. The adoption of a separate "Macedonian language" was also advocated as a means of unification of the Ethnic Macedonians with Serbian, Bulgarian and Greek consciousness. "On Macedonian Matters" was written in the South Slavic dialect spoken in central Bitola-Prilep. This dialect was proposed by Misirkov as the basis for the future language, and, as Misirkov says, a dialect which is most different from all other neighboring languages (as the eastern dialect was too close to Bulgarian and the northern one too close to Serbian). Misirkov calls this language Macedonian.