How to raise silk-worms. A brief manual of instructions, abridged from Bulletin 9 of the Division of Entomology.
Walker, Philip.
How to raise silk-worms. A brief manual of instructions, abridged from Bulletin 9 of the Division of Entomology. By Philip Walker ... - Washington, Gov't. Print. Off., 1890. - 16 p. illus. 23 cm. - United States. Dept. of Agriculture. Silk Section. Bulletin 1 .
agr08000737
Silkworms.
SF545 / .W2
How to raise silk-worms. A brief manual of instructions, abridged from Bulletin 9 of the Division of Entomology. By Philip Walker ... - Washington, Gov't. Print. Off., 1890. - 16 p. illus. 23 cm. - United States. Dept. of Agriculture. Silk Section. Bulletin 1 .
agr08000737
Silkworms.
SF545 / .W2