1. Arya, S.; Toky, O.P.; Tomar, R.; Bist, R.P. and Harris, P.J.C. (1992). Provenance variation in seed and pod characteristics of Prosopis cineraria (L.) Druce in Arid India. J. Tree Sci., 11(2): 86-94.
2. Armstrong, D.P. and Westoby, M. (1993). Seedlings from large seeds tolerate defoliation better. A test using phylogenetically independent contrasts. Ecology, 74: 1090-1100. https://doi.org/10.2307/1940479
3. F.A.O. (1985). A guide to Forest seed handling: with special reference to tropics. FAO Forestry No. 20/2, FAO, Rome, pp. 379.
4. Isik, K. (1986). Altitudinal variation in Pinus brutia ten: Seed and seedling characteristics. Silvae Genetica, 35: 58-67.
5. Johnson, H.W.; Robinson, H.F. and Comstoc, R.F. (1955). Estimate of genetic and environmental variability in Soyabin. Agponomy Journal, 47: 314-318. https://doi.org/10.2134/agronj1955.00021962004700070009x
6. Khosla, P.K. (1984). Genetic Improvement of Agroforestry Trees. In: Khosla et al. (ed.) Agroforestry Systems- A New Challenge, Indian Society of Tree Scientists, Solan, H.P., India, pp. 151-160.
7. Lusk, C.H. (1985). Seed size, establishment sites and species co-existence in a chilean rain forest. Journal of Vegetation Science, 6: 249-256. https://doi.org/10.2307/3236220
8. Manga, V.K. and Sen, D.N. (1996). Genetic parameters for seed traits in P. cineraria (L.) Macbride. Indian Journal Forestry, 19: 148-151.
9. Mikhailov, V. (1987). Variation in the dimensions, weight and form of seeds of Pinus nigra in the Slavyanka mountains. Gorskostopanska, Nauka, 24: 26-37.
10. Negi, A.K. (1991). Studies on impact of local folk on forests of Tehri Garhwal : A case study. D.Phil. thesis from H.N. Bahuguna Garhwal University, Srinagar, pp. 169.
11. Panse, V.G. and Sukhatme, P.V. (1967). Statistical methods for agricultural workers. ICAR, New Delhi, pp. 359.
12. Ponamal, N.R.; Arjunan, M.C. and Anthony, K.A. (1993). Seedling growth and biomass production of Hardwickia binata Roxb. as effected by seed size. Indian Forester, 119: 59-62.
13. Sharma, N.K.; Burman, U.; Tiwari, J.C.; Bohara, M.D. and Harsh, L.N. (1994). Variability studies in pod and seed characteristics of Prosopis juliflora (Sw.) DC. Indian Journal of Forestry, 17: 161-165.
14. Sharma, R.S.; Bhalaik, R.R. and Temburne, B.V. (1999). Estimates of genetic parameters of cone and seed characters of Pinus roxburghii Sargent. Journal of Tropical Forestry. 15: 108-111.
15. Singh, N.B. and Chaudhary, V.K. (1993). Variability, heritability and genetic gain in cone and nut characters of Chilgosa pine (Pinus gerardiana Wall.). Silvae Genetica, 42: 2-3.
16. Singh, R.V. (1982). Fodder Trees of India. New Delhi, Oxford & IBH Publishing Company, pp. 45-49.
17. Sniezko, R.A. and Stewart, HTL (1989). Range wide provenance variation in growth and nutrition of Acacia albida seedling propagated in Zimbabwe. For. Ecol. Manage. 27: 179-197. https://doi.org/10.1016/0378-1127(89)90106-0
18. Troup, R.S. (1921). The Silviculture of Indian Trees. Vol. II, Oxford, Clarendon Press.
19. Turnbull, J. (1975). Seed collection-sampling consideration and collection techniques. In: Report of FAO/DANIDA Training Course of Forest Seed Collection and Handling, held in Chiang Mai. Thailand, February- March, FAO/TF/RAS-11 (DEN), FAO, Rome.
20. Uniyal, A.K.; Bhatt, B.P. and Todaria, N.P. (2002). Provenance variation in seed characteristics of Grewia oppositifolia Roxb.: A promising Agroforestry tree crop of Central Himalaya, India. Indian J. Forestry, 25(2): 209-214.
21. Volker, P.W.; Dean, C.A.; Tibbits, W.N. and Ravenwood, I.C. (1990). Genetic parameters and gain expected from selection in Eucalyptus globulus in Tasmania. Silvae Genetica, 42: 2-3.
22. Willan, R.L. (1985). A Guide to Forest Seed Handling with Special Reference to the Tropics. FAO Publication, Rome, pp. 379.