na INLIS000000000031519 Ind 0010-1218013357 Vegetable gums and resins HOWES, F.N. F.N. Howes Walthan Chronica Botanica 1949 xx, 188 p.: ill. xx, 188 p.: ill. 668.4HOWv Bibl.: p. 169-174 Index: p. 177-188 668.4 GUMS RESINS 711/67-mfn33916