TENEUR ET FORMES DE PHOSPHORE DES SOLS DANS CERTAINES SERRES MARAICHERESVELCHEV V.1979; POCHVOZNAN. I AGROKHIM.; BGR; DA. 1979; VOL. 14; NO 2; PP. 24-29; ABS. RUS/ENG; BIBL. 8 REF.Article

EFFICACITE DE LA FERTILISATION AZOTEE DU BLE DANS LES SOLS BRUNS PRAIRIAUX LESSIVES DE LA REGION DE SOFIAVELCHEV V.1979; POCHVOZNAN. I AGROKHIM.; BGR; DA. 1979; VOL. 14; NO 6; PP. 49-57; ABS. RUS/ENG; BIBL. 17 REF.Article

ETUDE ECOLOGIQUE, BIOLOGIQUE ET PHYTOCENOLOGIQUE DE PANCRATIUM MARITIMUM L. DANS LA REGION DE SOZOPOL (BULGARIE)VELCHEV V; VASILEV P.1976; FITOLOGIJA; BALG.; DA. 1976; VOL. 5; PP. 3-20; ABS. RUSSE ANGL.; BIBL. 9 REF.Article

CROISSANCE ET PERFORMANCES DANS LA REPRODUCTION CHEZ LES PLANTES DE FRAISIER APRES IRRADIATIONVELCHEV V; STOYANOV S.1982; GRADINAR. LOZAR. NAUKA; BGR; DA. 1982; VOL. 19; NO 3; PP. 18-25; ABS. RUS/ENG; BIBL. 16 REF.Article

PRELIMINARY RESULTS ON THE PRIMARY DEEP GEOCHEMICAL AUREOLES OF ELEMENTS IN THE RADKA PYRITIC COPPER MINE (BULGARIA). (ABS.).VELCHEV V; TOKMACHIEVA M.1971; P.258A264 10F 3TB; 1971, VOL. 11, P. 397Miscellaneous

Stara Planina kato perspektivna zlatonosna metallogena zonaVELCHEV, V.Geologyia i polezni izkopaemi na Severozapadna Bylgariya. 1989, pp 122-124, 3 p.Book Chapter

BESOIN EN ELEMENTS MINERAUX DES VARIETES DE BLE SADOVO ET SLAVYANKASTEFOVA S; VELCHEV V.1979; POCHVOZNAN. I AGROKHIM.; BGR; DA. 1979; VOL. 14; NO 4; PP. 57-65; ABS. RUS/ENG; BIBL. 14 REF.Article

REGIME DE NUTRITION DE LA VARIETE DE BLE D'HIVER SLAVYANKASTEFOVA S; VELCHEV V.1979; POCHVOZNAN. I AGROKHIM.; BGR; DA. 1979; VOL. 14; NO 5; PP. 80-91; ABS. RUS/ENG; BIBL. 19 REF.Article

PRELIMINARY RESULTS ON THE PRIMARY DEEP GEOCHEMICAL AUREOLES OF ELEMENTS IN THE PYRITIC COPPER MINE "RADKA" (BULGARIA) (ABSTRACT).VELCHEV V; TOKMACHIEVA M.1970; THIRD.INTERNAT.GEOCHEM.EXPLOR.SYMPOS.APRIL.1970.CANADA.; 1970Miscellaneous

RECHERCHE SUR LA COMPOSITION CHIMIQUE ET LA QUALITE DES HYBRIDES INTERSPECIFIQUES DANS LE GENRE RUBUS L.KHRISTOV L; DANEVA N; VELCHEV V et al.1979; GRADINAR. LOZAR. NAUKA; BGR; DA. 1979; VOL. 16; NO 1; PP. 3-13; ABS. RUS/ENG; BIBL. 20 REF.Article

COPOLYMERIZATION OF ITACONIC ACID MONOMETHYL ESTER (1-CARBOXY-1-CARBOMETHOXYMETHYLETHYLENE) WITH ACRYLONITRILE IN THE PRESENCE OF ZNCL₂.BOUDEVSKA H; PLATCHKOVA S; VELCHEV V et al.1977; ANGEW. MAKROMOL. CHEM.; SCHWEIZ; DA. 1977; VOL. 65; PP. 41-48; ABS. ALLEM.; BIBL. 7 REF.Article

EFFET DE L'AZOTE ET DU PHOSPHORE SUR LES RENDEMENTS ET LA COMPOSITION CHIMIQUE DE L'ORGE DE BRASSERIEVELCHEV V; BOBOSHEVSKA D; SLAVOV D et al.1974; POCHVOZNAN. I AGROKHIM.; BALG.; DA. 1974; VOL. 9; NO 1; PP. 93-100; ABS. RUSSE ANGL.; BIBL. 10 REF.Article

Dolnopaleozojskite Cherni shisti v Bylgariya i tyakhnoto metalogenno znachenieVELCHEV, V. N.Godišnik na Visšija minno-geoložki institut Sofija. 1984, Vol 30, Num 2, pp 101-106, issn 0367-5467Article