Pennsylvania State Univ Pr

year of pub­li­ca­ti­onISBNauthor(s)title
1970978-99938-602-2-8Landscaping the Home Grounds (Agrs 23)
1991978-99938-602-3-5Penn State Handbook for Commercial Mushroom Growers
  ''978-99938-602-4-2Commercial Vegetable Production Guide