共 50 条
- [43] EFFECTS OF LAND-USE, WATERSHED AND RECHARGE CHARACTERISTICS ON PESTICIDE CONTAMINATION OF GROUNDWATER IN CENTRAL PENNSYLVANIA WATERSHED [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1989, 197 : 130 - AGRO
- [48] AIDS crops agricultural output [J]. ENVIRONMENTAL HEALTH PERSPECTIVES, 2004, 112 (01) : A27 - A27
- [50] AGRICULTURAL USE AND DISPOSAL OF SEPTIC TANK SLUDGE IN PENNSYLVANIA [J]. PENNSYLVANIA STATE UNIVERSITY EXTENSION SERVICE SPECIAL CIRCULAR, 1979, (257): : 3 - 11