THE TAXONOMY OF HAZARDIA (COMPOSITAE: ASTEREAE)CLARK WD.1979; MADRONO; USA; DA. 1979; VOL. 26; NO 3; PP. 105-127; BIBL. 36 REF.Article

ALCOHOLISM: BLOCKS TO DIAGNOSIS AND TREATMENTCLARK WD.1981; AM. J. MED.; ISSN 0002-9343; USA; DA. 1981; VOL. 71; NO 8; PP. 275-286; BIBL. 54 REF.Article

DOCUMENT SCANNER MECHANISMCLARK WD.1979; I.B.M. J. RES. DEVELOP.; USA; DA. 1979; VOL. 23; NO 4; PP. 415-423; BIBL. 3 REF.Article

EFFECTS OF HIGHWAYS ON RED-WINGED BLACKBIRD AND HORNEL LARK POPULATIONSCLARK WD; KARR JR.1979; WILSON BULL.; USA; DA. 1979; VOL. 91; NO 1; PP. 143-145Article

SYSTEMATIC IMPLICATIONS OF FLAVONOIDS IN HAZARDIA.CLARK WD; MABRY TJ.1978; BIOCHEM. SYSTEMAT. ECOL.; G.B.; DA. 1978; VOL. 6; NO 1; PP. 19-20; BIBL. 4 REF.Article

TAXONOMY OF HAPLOPAPPUS SECT. GYMNOCOMA (COMPOSITAE)BROWN GK; CLARK WD.1982; SYST. BOT.; ISSN 0363-6445; USA; DA. 1982; VOL. 7; NO 2; PP. 199-213; BIBL. 2 P.Article

CHROMOSOME NUMBERS IN SOUTH AMERICAN HAPLOPAPPUS CASS. (COMPOSITAE)BROWN GK; CLARK WD.1981; AM. J. BOT.; ISSN 0002-9122; USA; DA. 1981; VOL. 68; NO 9; PP. 1218-1221; BIBL. 25 REF.Article

POLLEN MORPHOLOGY OF HAPLOPAPPUS AND RELATED GENERA (COMPOSITAE-ASTEREAE)CLARK WD; BROWN GK; MAYES RA et al.1980; AM. J. BOT.; ISSN 0002-9122; USA; DA. 1980; VOL. 67; NO 9; PP. 1391-1393; BIBL. 10 REF.Article

EFFECTS OF A LONG-TERM FIELD SULFUR DIOXIDE FUMIGATION ON ARCTIC CARIBOU FORAGE LICHENSMOSER TJ; NASH TH III; CLARK WD et al.1980; CAN. J. BOT.; ISSN 0008-4026; CAN; DA. 1980; VOL. 58; NO 21; PP. 2235-2240; ABS. FRE; BIBL. 42 REF.Article

BENCH SCALE TESTING OF LOW-NO_X LBG COMBUSTORSCLARK WD; FOLSOM BA; SEEKER WR et al.1982; J. ENG. POWER; ISSN 0022-0825; USA; DA. 1982; VOL. 104; NO 1; PP. 120-128; BIBL. 16 REF.Article

FLAVONOIDS OF HAPLOPAPPUS RENGIFOANUS REMY IN GAYULUBELEN A; CLARK WD; BROWN GK et al.1981; J. NAT. PROD.; ISSN 0163-3864; USA; DA. 1981; VOL. 44; NO 3; PP. 294-295; BIBL. 10 REF.Article

SYSTEMATIC IMPLICATIONS OF FLAVONOID PATTERNS IN HOPLOPAPPUS SEGREGATESCLARK WD; URBATSCH LE; HARTMAN RL et al.1980; BIOCHEM. SYSTEMAT. ECOL.; GBR; DA. 1980; VOL. 8; NO 3; PP. 257-259; BIBL. 14 REF.Article

FLAVANOIDS OF HAPLOPAPPUS SCROBICULATUS AND HAPLOPAPPUS SERICEUSATES N; ULUBELEN A; CLARK WD et al.1982; J. NAT. PROD.; ISSN 0163-3864; USA; DA. 1982; VOL. 45; NO 2; PP. 189-190; BIBL. 7 REF.Article