This paper deals with the process of discussing land usurpation in the territory of Maglaj municipality using appropriate software applications. Drawing procedure of the boundary line between the forest (forest land) and farmland is described. Later are given characteristics of usurped land - lots. Boundary line is drawn on the plans in AutoCAD software, and the database and review drafts of all forest complexes have been made using ArcGIS software application. In this paper three cadastral municipalities are processed (cadastral municipality Ošve, cadastral municipality Moševac and cadastral municipality Ravna).

The development of digital levels in the past two decades has progressed rapidly. Although technically inferior, optical levels are not only survived in the modern age but continue to be produced and improved. In this paper we tried to explain this phenomenon, with review of the historical development and current state of precision optical levels.

Biokemijska genetička identifi kacija obične bukve (Fagus sylvatica L.), provedena je korištenjem izoenzimskih biljega u osam prirodnih populacija na širem području Bosne i Hercegovine. Genetska varijabilnost analizirana je pomoću 10 izoenzimskih sustava, sa 16 polimorfnih lokusa i 52 alela. Utvrđena je statistički značajna razlika između populacija, uz nešto nižu vrijednost prosječne diferenciranosti. Dobiveni rezultati upućuju na zaključak, da bi se u svrhu održavanja prirodnih genetskih izvora obične bukve u Bosni i Hercegovini trebala uspostaviti što gušća mreža banki gena metodama in situ i ex situ (banke sjemena, sjemenske sastojine i sjemenske plantaže) potrebna za održavanje genetske raznolikosti populacija. Na temelju rezultata istraživanja, svaka ekološka niša obične bukve trebala bi imati svoju banku gena,uz odgovarajući broj populacija i jedinki, kako bi se očuvale ekološke i fi ziološke značajke ove vrijedne gospodarske vrste.

Gravity is considered as the basic physical force in the nature. Modern satellite missions: CHAMP, GRACE and GOCE allowed modeling of the global gravity field with very high accuracy, as well as its spatial and temporal variations. This paper describes the main objectives, characteristics, the latest results of these missions, as well as the expectations of the future observations, and their importance and contributions for the surveying and geodetic practice, and scientific achievements as well, in geodesy, geophysics and hydrology.