VOLUME 22 NO. 1 & NO. 2 2000
CONTENTS
Distribution, transmission and disease characterization of sweetpotato feathery mottle virus
Microorganisms asssociated with postharvest spoilage of yams
External morphology of eri (Samia cynthia ricini Boisduval) egg during embryonic development
Surface charge characteristics of selected Philippine soils
Nutrient status of soils in the rain forest of Mt. Pangasugan, Leyte, Philippines