Compiled by Charles G. Yale
GeoRef; Biological abstracts; Chemical abstracts; Bibliography of agriculture; Vol. 21-40 also called Ser. 2, v. 1-20; very tight binding
GeoRef; Biological abstracts; Chemical abstracts; Bibliography of agriculture; Vol. 21-40 also called Ser. 2, v. 1-20; narrow margins and skewed pages throughout.%0A
GeoRef; Biological abstracts; Chemical abstracts; Bibliography of agriculture; Vol. 21-40 also called Ser. 2, v. 1-20; Narrow margins & skewed pages throughout.
GeoRef; Biological abstracts; Chemical abstracts; Bibliography of agriculture; Vol. 21-40 also called Ser. 2, v. 1-20