na INLIS000000000010956 Ind 0010-1118010956 Observations on the causes of gregarious flowering in plants SEIFRIZ, William William Seifriz [s.l s.n] 1923 19 p.; 26 cm. 19 p.; 26 cm. 581.14SEFo Refrin from: american journal of botany vol. 10, 1928: p. 93-112 581.14 PLANT PGYSIOLOGY FLOWERING mfn-12739