By American Plant Life Society.
, -Existencias: 1986 no. 4; 1987 no. 1-4; 1988 no. 1, 4; 1989 no. 1-4

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By American Plant Life Society.
, - Título BPH: Pl. Life (Stanford) - TODOS LOS NUMEROS DE PLANT LIFE, ESTAN GUARDADO EN EL ESTANTE JUNTO CON HERBERTIA. - Existencias: 1945-1948 v. 1-4, no. 1-3; 1949-1959 v. 5-15, no. 1-4; 1960-1969 v. 16-25, no. 1-4; 1970-1979 v. 26-35, no. 1-4; 1980-1983 v. 36-39, no. 1-4.

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