共 8 条
- [1] CULBERSON C F, 1970, Bryologist, V73, P177, DOI 10.2307/3241261
- [2] ERDMAN JA, 1975, 75436 US GEOL SURV O, P10
- [3] HARMS TF, 1975, 2ND US GEOL SURV GEO, P74
- [4] KNOP W, 1968, KREISLAUF STOFFS
- [5] KNOP W, 1865, LANDWIRTSCHAFTLICHEN, V7, P436
- [6] NOURISH R, 1974, Lichenologist (London), V6, P73, DOI 10.1017/S0024282974000041
- [7] SHACKLETTE HT, 1965, 1198D US GEOL SURV B
- [8] 1971, ORGANIC INDEX POWDER