United States: Bureau of Entomology and Plant Quarantine

Subjects

Plant quarantine--Law and legislation--Austria., Insecticides--Bibliography., Nicotine--Bibliography, Nursery stock--Packaging--United States., Plant quarantine--Law and legislation--Alabama, Plant quarantine--Law and legislation--Algeria., Plant quarantine--Law and legislation--Argentina., Plant quarantine--Law and legislation--Arizona, Plant quarantine--Law and legislation--Arkansas, Plant quarantine--Law and legislation--Australia., Plant quarantine--Law and legislation--Belgium., Plant quarantine--Law and legislation--Brazil., Plant quarantine--Law and legislation--California, Plant quarantine--Law and legislation--Colonies--France., Plant quarantine--Law and legislation--Czechoslovakia., Plant quarantine--Law and legislation--Egypt., Plant quarantine--Law and legislation--El Salvador., Plant quarantine--Law and legislation--Germany., Plant quarantine--Law and legislation--Great Britain., Plant quarantine--Law and legislation--Greece., Plant quarantine--Law and legislation--Hungary., Plant quarantine--Law and legislation--Mexico., Plant quarantine--Law and legislation--Morocco., Plant quarantine--Law and legislation--Romania., Plant quarantine--Law and legislation--Soviet Union.