共 50 条
- [2] SOIL AND WATER CONSERVATION RESEARCH - CHALLENGE FOR 70S [J]. AGRICULTURAL ENGINEERING, 1972, 53 (04): : 17 - &
- [3] 70S ... CHALLENGE AND OPPORTUNITY [J]. JOURNAL OF SOIL AND WATER CONSERVATION, 1970, 25 (02): : 46 - &
- [5] WATER AND CHALLENGE OF 70S [J]. JOURNAL AMERICAN WATER WORKS ASSOCIATION, 1971, 63 (11): : 696 - &
- [9] PHARMACIST PRESCRIBING - CHALLENGE OF 70S [J]. JOURNAL OF THE AMERICAN PHARMACEUTICAL ASSOCIATION, 1977, 17 (01): : 58 - 58