Root diseases and soil-borne pathogens/

Berkeley: University of California P., 1970 . 252 p. , Papers of a symposium held in conjunction with the First International Congress of Plant Pathology. 0520015827

Place Hold on Root diseases and soil-borne pathogens/

The soil ecosystem :

London : Tho Systematics association, 1969 . xi, 247 p. :

Place Hold on The soil ecosystem :

University of Guyana Library Search for 'su:Soil micro-organisms. - and su:Congresses.'

Root diseases and soil-borne pathogens/

The soil ecosystem :