共 50 条
- [8] ESTIMATING THE EFFICIENCY OF MEASURES TO IMPROVE SOIL FERTILITY ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 1991, 35 (03): : 227 - 231
- [10] ON BIRTH INTERVALS FOR MEASURING FERTILITY CHANGES SANKHYA-THE INDIAN JOURNAL OF STATISTICS SERIES B, 1973, 35 (MAR): : 109 - 120