Both are periodicals:

See Botanico-Periodicum-Huntianum online:

http://fmhibd.library.cmu.edu/fmi/iwp/cgi?-db=BPH_Online&-loadframes

Contributions from the Gray Herbarium of Harvard University. Cambridge, MA. Nos. 1–214, (1891–1984), 1904–84. Contr. Gray Herb. Superseded by: Harvard papers in botany. Cambridge, MA. ULS 3-1813-3. ISSN 0195-6094 HI 76416

Publications of the Bussey Institution, Harvard University. Jamaica Plains, MA. ?–1980+. Publ. Bussey Inst. Harvard Univ. HI 70234

Hi, please if they are periodic Journals you should treat the references as Journals

https://canberra.libanswers.com/faq/192818

Hi,

The first reference is a journal, as described in the following link:

https://www.biodiversitylibrary.org/bibliography/59986#/summary

The second reference is an archival record as shown in the following link:

https://www.arboretum.harvard.edu/wp-content/uploads/VI-BI-2011.pdf

Dear Avishag:

The second link given by you shows:

Records of the Bussey Institution , 1872-2007: Guide

Archives of the Arnold Arboretum of Harvard University

125 Arborway, Jamaica Plain, Massachusetts

but Atena asked for Publications of the Bussey Institution, Harvard University

The latter publication starts from 1980. So both might not be the same.

Best wishes,

Subir.

Hi Subir Bandyopadhyay

So many thanks for your answers. Hence, the problem totally solved. I must treat both of them as journals as i did before.

Regards

Hi Subir Bandyopadhyay,

Ms Eslami asked to establish the type of material of these references, at least so I understood.

Thanks Avishag.

Both

Thank you Elashry.