INDICES OF RAIN EROSIVITY. A REVIEW = INDICES DE L'EROSIVITE DUE A LA PLUIE. UNE REVUEBERGSMA E.1981; ITC J.; ISSN 0303-2434; NLD; DA. 1981; NO 4; PP. 460-484; ABS. FRE/DUT; BIBL. 46 REF.; 4 TAB. ; TABL./ILL.Article

FIELD BOUNDARY GULLIES IN THE SERAYU RIVER BASIN, CENTRAL JAVA.BERGSMA E.1978; I.T.C.J.; NEDERL.; DA. 1978; NO 1; PP. 104-121; ABS. FR. ESP.; BIBL. 10 REF.; 10 ILL.Article

FIELD BOUNDARY GULLIES IN THE SERAYU RIVER BASIN, CENTRAL JAVA.BERGSMA E.1978; I.T.C.J.; NETHERL.; DA. 1978; NO 1; PP. 104-121; ABS. FR. ESP.; BIBL. 10 REF.Article

SOIL EROSION TOPOSEQUENCES ON AERIAL PHOTOGRAPHS.BERGSMA E.sdIN: SYMP. REMOTE SENSING PHOTO INTERPRETATION. PROC.; BANFF, ALBERTA; 1974; S.L.; INT. SOC. PHOTOGRAMM.; DA. S.D.; VOL. 1; PP. 317-328; ABS. FR. ALLEM.; BIBL. 2 P.Conference Paper

SOIL EROSION SEQUENCES ON AERIAL PHOTOGRAPHS.BERGSMA E.1974; ITC J.; PAYS-BAS; DA. 1974; NO 3; PP. 342-376; ABS. FR. ALLEM.; BIBL. 20 REF.; 9 ILL.; (ITC STAFF TO ISP COMM. VII SYMP.; BANFF, ALBERTA; 1974)Conference Paper

INITIAL DEVELOPMENT OF THE ITC MULTISCOPE FOR PHOTO-INTERPRETATIONBERGSMA E.1979; I.T.C. J.; NLD; DA. 1979; NO 4; PP. 548-566; ABS. FRE/SPAArticle

Incentives of land users in projects of soil and water conservation, the weight of intangiblesBERGSMA, E.GeoJournal. 2000, Vol 50, Num 1, pp 47-54, issn 0343-2521Article

Rainfall erosion surveys for conservation planning = La cartographie des phénomènes d'érosion dus à l'eau de pluie appliquée à la protection des solsBERGSMA, E.ITC journal. 1983, Num 2, pp 166-174, issn 0303-2434Article

DROP TESTING AGGREGATE STABILITY OF SOME SOILS NEAR MERIDA, SPAIN = LE TEST DE LA GOUTTE POUR APPRECIER LA COHESION DE QUELQUES SOLS DE LA REGION DE MERIDA, ESPAGNEBERGSMA E; VALENZUELA CR.1981; EARTH SURF. PROCESSES LANDF.; ISSN 0197-9337; GBR; DA. 1981; VOL. 6; NO 3-4; PP. 309-318; BIBL. 1 P.; 5 TAB. ; TABL./ILL.Conference Paper

Rainfall erosion surveys for conservation planning = Etudes de l'érosion du sol dans le cadre de la planification de la conservation des solsBERGSMA, E.ITC journal. 1983, Num 2, pp 166-174, issn 0303-2434Article

Drop testing aggregate stability of some soils near Merida, SpainBERGSMA, E; VALENZUELA, C. R.Earth surface processes. A journal of geomorphology London, Adelaïde. 1981, Vol 6, Num 3-4, pp 309-318Article