1
Baskı/Yayın Bilgisi: 1988
Superior document: Smithsonian contributions to botany Number 72
2
Baskı/Yayın Bilgisi: 1989
Superior document: Smithsonian contributions to botany Number 69
3
Baskı/Yayın Bilgisi: 1989
Superior document: Smithsonian contributions to botany Number 68
4
Baskı/Yayın Bilgisi: 1985
Superior document: Smithsonian contributions to botany 59
5
Baskı/Yayın Bilgisi: 1987
Superior document: Smithsonian contributions to botany Number 65