00659nas a2200193 a 4500 AR-ReUNN 20260702003716.0 260630c19709999us |||||||||||||||spa Pennsylvania State University, College of Agriculture, Agricultural Experiment Station 163978 Bulletin Pennsylvania University Pennsylvania Pennsylvania State University, College of Agriculture, Agricultural Experiment Station 1970 1970 -Existencias: 1970 no. 764-768 Agricultura 5304 CR (IBONE)97226 249774 249774 249774 AR-ReUNN spa AR-ReUNN aacr2